Dr. Chigozie K. Acha

Dr. Chigozie Kelechi Acha is an Associate Professor of Statistics and has been teaching statistics at both
undergraduate and graduate levels at the Michael Okpara University of Agriculture, Umudike (MOUAU) Nigeria for
more than seventeen years. Prior to this, she had done part-time teaching at the University of Nigeria Nsukka. She has
extensive experience in consulting and training within and outside Nigeria – University of Maryland’s Joint Program
in Survey Methodology (JPSM) USA, Hankali, University of Hull United Kingdom. In furtherance of her academic
dexterity, she has attended and presented papers at many conferences, workshops, and seminars in Frankfurt,
Germany; Krakow Poland; Cairo Egypt; Livingstone, Zambia; Nairobi, Kenya; Johannesburg South Africa; Ottawa,
Ontario, Canada; Dubai, UAE, Manama, Bahrain and others. She has published extensively in reviewed conference
proceedings and in several reputable national and international journals and has equally published three textbooks in
her area of specialization for use in tertiary institutions. Similarly, she has held many administrative positions within
the university system, including serving as Head of Department in both Michael Okpara University of Agriculture,
Umudike and Alex Ekwueme Federal University, Ndufu Alike, Ikwo (AEFUNAI), Nigeria, In addition she has served
as; a visiting scholar at Alex Ekwueme Federal University, Ndufu Alike, Ikwo (AEFUNAI), part-time Lecturer at
University of Nigeria, Nsukka; External Examiner at the Federal College of Agriculture, Isiagu; Adjunct lecturer at
Ebonyi State University, to mention but a few. She is also a team player, detail-oriented, analytical driven and has
worked on a wide variety of projects that have allowed her to practice what she teaches. She is adept at using the
following statistical software packages; Eviews, R-package, Python, SPSS, Latex, Matlab, Minitab, S-PLUS, Tora,
Stata and so on. She has successfully supervised many postgraduate (PhD and MSc) students and also many
undergraduate students.
RESERCH INTEREST
Primarily she is interested in the areas of Data Science, Machine Learning, Econometrics, Experimental design,
Nonparametrics but not limited to computational social science, and physical sciences. She is also passionate about

researching and teaching Statistics with the use of Eviews, R-package , Python, SPSS, Latex, Matlab, Minitab, S-
PLUS, Tora, Stata and Ms packages (Power point, Equation editor , Access, Excel) for resampling (e.g. the bootstrap

method) Data mining, experimental design, and other statistical computer modeling methods.
Journals Articles:
1. Acha, C. K. (2009) Women Empowerment as a Measure of Good Governance in Nigeria. International
Journal of Natural and Applied Science, 5(2), 167-173.
2. Acha, C. K. (2010) Impact of Housing and Age of Birds on Egg Production. International Journal of
Numerical Mathematics, 5(2), 275-298.
3. Acha, C. K. (2010) An Assessment of Communication Effectiveness in Nigerian Universities (Study of
Michael Okpara University of Agriculture, Umudike), Uyo Journal of Management Science, 2(2): 177-198.

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4. Acha, C. K. (2011) Principal Component Analysis as an Efficient Performance Measurement Tool. Journal
of the Nigerian Association of Mathematical Physics, 19, 607 – 614.
5. Acha, C. K. (2011) Comparative Analysis of Quadratic and Cubic Models on Egg Production. Animal
Production Research Advances, 7(2), 110 – 115.
6. Acha, I.A. and Acha C.K. (2011) Interest Rate in Nigeria: An Analytical Perspective. Research Journal of
Finance and Accounting, 3(2), 71-81.
7. Omekara, C. O. and Acha, C. K. (2012) Multivariate Analysis of the Performance of Students Using
Hotelling T2 Statistic. International Journal of Statistics and Analysis, 2(2), 131 – 142.
8. Acha, C. K. (2012) Regression and Principal Component Analyses: A Comparison Using Few Regressors.
American Journal of Mathematics and Statistics, 2(1), 1 – 5.
9. Acha, C. K. (2012) Symmetric and Unsymmetric Balanced Incomplete Block Design: A Comparative
Analysis. International Journal of Statistics and Applications, 2(4), 33 – 39.
10. Acha, C. K. and Nduaguibe, U. J. (2012) Entrepreneurial Success and Operations Research Techniques.
American Journal of Operations Research, 2(5), 45 –50.
11. Acha, C. K. (2012) Is Treatment Adjustment in SBIBD Necessary? International Journal of Probability
and Statistics, 1(3), 48– 53.
12. Acha, C. K. (2012) On two Methods of Analysing Balanced Incomplete Block Designs. Pakistan Journal
of Statistics and Operation Research, 8(4), 749 –757.
13. Nwogu, E. C. and Acha, C. K. (2014) Age of Bird at Optimal Production of Eggs: A Polynomial Regression
Analysis. Pakistan Journal of Statistics and Operation Research, 10(2), 205-215.
14. Acha, C. K. (2014) Parametric Bootstrap Methods for Parameter Estimation in SLR Models. International
Journal of Econometrics and Financial Management, 2(5), 175– 179. Doi:10.12691/ijefm-2-5-2.
15. Acha, C. K. (2014) Bootstrapping Normal and Binomial Distributions. International Journal of
Econometrics and Financial Management, 2(6), 253– 256. Doi:10.12691/ijefm-2-6-2.
16. Acha, C. K. (2014) Trend and Levels of Women Empowerment in Nigeria. American Journal of Applied
Mathematics and Statistics, 2(6), 402–408. Doi:10.12691/ajams-2-6-2.
17. Acha, C. K. and Acha, I. A. (2015) Application of Bootstrap Data Generating Processes on the Nigerian
Capital Market – Journal of Science and Sustainable Technology, MOUAU, 2(1), 227-241
18. Acha, C. K. (2015) A Perspective on Women Gender Equality in Nigeria: Level, Differentials and
Prediction. American Journal of Applied Mathematics and Statistics, 3(1), 12–16. Doi:10.12691/ajams-3-
1-3.
19. Acha, C.K. and Acha I.A. (2015) Smooth Bootstrap Methods on External Sector Statistics. International
Journal of Econometrics and Financial Management, 3(3), 115–120. Doi:10.12691/ijefm-3-3-2.
20. Acha, C. K. and Omekara, C. O. (2016) Towards Efficiency in the Residual and Parametric Bootstrap
Techniques. American Journal of Theoretical and Applied Statistics. 5(5), 285-289. Doi:
10.11648/j.ajtas.20160505.16.
21. Acha, C. K. (2016) Rescaling Residual Bootstrap and Wild Bootstrap. International Journal of Data
Science and Analysis. 2(1), 7-14. Doi: 10.11648/j.ijdsa.20160201.12.
22. Acha, C. K. (2016) The Efficiency of Malaria Drugs on Children of Different Gender Under Age Five in
Abia State Nigeria. Elixir International Journal Statistics. Elixir Statistics 101 (2016) 44007-44010.
Available online at www.elixirpublishers.com.
23. Acha C. K., and Nwabueze J. C. (2016) Restricted and Unrestricted Methods of Bootstrap Data Generating
Processes. International Journal of Theoretical and Applied Mathematics. 2 (2) 121-126. doi:
10.11648/j.ijtam.20160202.24.
24. Acha, C. K. (2017) and Ahaiwe, U. (2017). Predicting the Effect of Prolonged Dihydrotestosterone and
Estradiol Valerate Administration on Male Albino Rats. Data Research. 1(2), 19 – 25.
www.itspoa.com/journal/data.
25. Acha, C. K., and Iwuji C. (2017) Minimization of Total Production Cost Using Branch and Bound Integer
Programming. Journal of the Nigerian Association of Mathematical Physics, 41, 457 – 464.
26. Acha C. K. (2017) Bootstrapping Normal Distribution with Different Group Proficiency forms. Data
Research. 1(2), 10 -18. www.itspoa.com/journal/data.
27. Acha, C. K. and Amalahu, C. C. (2017). Interactions of Interest Rate and Its Implications for the Nigerian
Economy. Journal of the Nigerian Association of Mathematical Physics, 43, 285 – 292.
28. Acha, C. K. (2017) An Investigation of Parametric and Nonparametric Bootstrap Data Generating
Processes. Journal of the Nigerian Association of Mathematical Physics, 43, 293 – 300.

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29. Iwuji, A. C. and Acha, C. K. (2018) A Mixed-Integer Lexicographic Goal Programming Model for
Achieving Estimated Targets in Multi-Product Systems. . Data Research. 1(1), 33-42.
www.itspoa.com/journal/data.
30. Acha C.K. and Umezurike C. (2018). Empirical Assessment of Selected Financial Indicators and Nigeria
Gross Domestic Product. Quantitative Economics Research 1(1), 47-55 |
http://journal2.um.ac.id/index.php/qer | qer.journal@um.ac.id.
31. Acha, C. K. and Nwabueze, J. C. (2018). An Investigation of Bootstrap methods in Parametric Estimations
in Simple Linear Regression. Data Research. 2(2), 54-64. www.itspoa.com/journal/data.
32. Acha, C. K. (2018) and Iwuji, A. C. (2018) A Meta Goal Programming Model with Mixed-Integer
Variables: Application in Multi-Product Manufacturing Systems. Annals of Statistical Theory and
Applications (ASTA), 2: 1-8. Publisher: Professional Statisticians Society of Nigeria(PSSN)
33. Amalahu, C. C. and Acha, C. K. (2018). Application of Auto- Regressive Distributed Lag Model (ADRL)
Bound Test on Selected Macroeconomic Variables. Quantitative Economic Research, 1(2), 79–86.
http://journal2.um.ac.id/index.php/qer/article/view/5535/3174
34. Acha, C. K. (2018) Analysis of Yam Yield Data: A Comparison of One-Way ANOVA and Kruskal -Wallis
Test – Journal of science and Sustainable Technology, MOUAU, 2(1), 241 – 254.
https://ojs.mouau.edu.ng/index.php/jsae/issue/view/
35.Eziokwu, C. E., Acha C.K. and Okolo A. (2019) On a Review of the Lebesgue Integrals with Application to
Probability Theory. Asian Research Journal of Current Science.1 (1): 34-44, 2019; Article no.ARJOCS.149.
36.Acha, C. K and Uko O. U. (2019) Simultaneous Equation Modeling of Selected Econometric Variables on
the Nigerian Economy. Benin Journal of Statistics. 2, 76– 84.
37.Acha, C. K. (2019) Comparative Modelling of Parameter Estimation Methods with Nigerian Financial Sector
Statistics. Scientia Africana. 18: 187-196.
38.Shittu, O. I, Marcus, N. S. and Acha, C. K. (2019) Multivariate GARCH Modelling of Volatility of Nigerian
Stock Market and Some Economic Indices. Scientia Africana. 18: 197-207.
39. Akintunde, M. O., Acha, C.K., Agunloye, O.K.,Eriobu, N. O., Oyekunle, J. O.I.,, Abdulazeez, I. l. A.
(2019) Exchange Rate Forecasting Using Non-linear Threshold Models. International Journal of
Probability and Statistics 2019, 8(2): 30-36 DOI: 10.5923/j.ijps.20190802.02
40. Akintunde, M. O., Acha, C.K., Agunloye, O. K, Oyekunle, J.O.1, Agbona, A. A.1, Kgosi P. M. (2019)
Evaluating the Forecast Performance of Autoregressive Conditional Heteroscedasticity (ARCH) Family
Models. American Journal of Mathematics and Statistics 2019, 9(6): 221-227 DOI:
10.5923/j.ajms.20190906.03
41.Effiong, B. A., Okereke, E. W., Omekara, C. O., Acha, C. K. and E. A. Akpan (2023) A New Family of
Smooth Transition Autoregressive (STAR) Models: Properties and Application of its Symmetric Version to
Exchange Rates. Communication in Physical Sciences, 9(3):310-324
Edited Conference Proceedings
42. Nwogu, E. C. and Acha, C. K. (2011) Age of Birds at Optimal Production of Eggs: A Polynomial
Regression Analysis. Proceedings of the Nigerian Mathematical Society (NMS) 30th Annual Conference
2011 held at Federal University of Technology, Minna, Niger State, pp 45-54.
43. Acha, C. K. (2016) The Efficiency of Malaria Drugs on Children Under Age Five in Nigeria. Proceedings
of the Nigerian Statistical Association (NSA) Annual Conference 2016 held at international conference
Centre, 900 Herbert Macaulay Way, Area II Opposite Radio House, Federal Capital Territory FCT) Abuja,
from 7th – 9
th of September, 2016, pp 761-770.

44. Acha, C. K. and Acha, I. A. (2017). Application of Bootstrap Data Generating Processes on the Nigerian
Capital Market. Proceedings of the Nigeria Statistical Society (NSS), 1st International Conference on
Statistical Research And It’s Applications, from April 3-6, 2017, held at University of Ibadan (UI)
Conference Center, University of Ibadan, Ibadan, Nigeria, 1: pp 156 -161.
45. Acha, C. K. (2017). An Investigation of Parametric and Nonparametric Bootstrap Data Generating
Processes” Proceedings of the Nigeria Statistical Society (NSS), 1st International Conference on Statistical
Research And It’s Applications, from April 3-6, 2017, held at University of Ibadan (UI) Conference Center,
University of Ibadan, Ibadan, Nigeria, 1: 185 – 190.
46. Acha, C. K. (2018). Impact of unemployment and interest rates on economic growth rate in Nigeria. Edited
Proceedings of the Professional Statisticians Society of Nigeria, 2nd International Conference on Statistical

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Methods in Big Data Research: Challenges & Prospects in Modeling Climate Change, from April 10-12,
2018, held at international Conference Center, University of Calabar, Nigeria. Vol. 2: 283 -288.
www.pssn.com.ng ISBN: 978-978-55191-5-0
47. Nwezza, E. E. and Acha, C. K. (2018). On Robust Parameter Estimation for Phase 1 Linear Profile
Monitoring. Proceedings of the Professional Statisticians Society of Nigeria, 2nd International Conference
on Statistical Methods in Big Data Research: Challenges & Prospects in Modeling Climate Change, from
April 10-12, 2018, held at international Conference Center, University of Calabar, Nigeria. vol. 2: 339 –
345.
www.pssn.com.ng. ISBN: 978-978-55191-5-0
48. Acha, C. K (2019) Principal Component Analysis of Nigerian Stock Exchange. Edited Proceedings of the
Professional Statisticians Society of Nigeria, 3rd International Conference on Statistics, Democracy and
Nation Building, from June 17th – 20th, 2019, held at Center of Excellence, Ahmadu Bello University, Zaria,
Nigeria. Vol.3: 10- 14. Publisher: Professional Statisticians Society of Nigeria.www.pssn.com.ng ISBN:
978-978-55191-5-0
49. Acha, C. K (2019) On the Causality relationship the Gross Domestic Product, Inflation Rate, Exchange
Rate and Interest Rate in Nigeria. Edited Proceedings of the Professional Statisticians Society of Nigeria,
3
rd International Conference on Statistics, Democracy and Nation Building, from June 17th – 20th, 2019, held
at Center of Excellence, Ahmadu Bello University, Zaria, Nigeria. Vol.3: 1- 9. www.pssn.com.ng ISBN:
978-978-55191-5-0
Books
50. Omekara, C. O. and Acha C. K. (2017). Nonparametric Statistics. ISBN: 978-54309-6-7. Prisat Nigeria
Limited: Aba.
51. Acha C. K. (2018). Fundamentals of Statistics. ISBN: 978-2832-50-2. DAVES PUBLISHERS, Uyo.
52. Acha C. K. (2020). Comprehensive Guide to Statistics. ISBN: 978-978-60223-7-6. PARVENU
TECHNOLOGIES, Uyo.
CONFERENCES/WORKSHOPS/SEMINARS/ TRAININGS ATTENDED:

1. 31st Annual Conference of the Nigerian Statistical Association (NSA) at Enugu, Enugu State,
Nigeria, September 4th – 7
th, 2007.

2. 34th Annual Conference of the Nigerian Statistical Association (NSA) at Owerri, Imo State, Nigeria,
September 22nd – 27th, 2010.
3. 30th Annual Conference of the Nigerian Mathematical Society (NMS) at Federal University of
Technology, Minna, Niger State, Nigeria, July 9th

-22nd 2011.

4. 1
st International Conference and Exhibition Uyo 2013 – Organization for Women in Science for the
Developing World (OWSD) at University of Uyo, Uyo, Akwa Ibom State, Nigeria, June 3rd – 6
th
,

2013.
5. 24th Annual Conference of the Nigeria Statistical Association (NSA-PRS workshop) at Michael
Okpara university of agriculture, Umudike, Abia State, Nigeria, November, 10th
-14th, 2014.
6. 39th Annual Conference of the Nigerian Statistical Association (NSA) at Multipurpose Hall, Local
Government Service Commission Osun State Secretariat, Osogbo, Nigeria, September 9th – 11th
,

2015.
7. 14th Regional Scientific Conference of the Sub-Sahara Africa Network (SUSAN) of the
International Biometric Society, at University of Ibadan (UI) Conference Center, University of
Ibadan, Ibadan, Nigeria, November 11-13, 2015.
8. 1
st International Conference of the Nigeria Statistical Society (NSS) on Statistical Research and it’s
Applications at University of Ibadan (UI) Conference Center, University of Ibadan, Ibadan, Nigeria,
April 3-6, 2017.
9. 2
nd International Conference of the Nigeria Statistical Society (NSS) on Statistical Methods In Big
Data Research: Challenges & Prospects in Modeling Climate Change, at CES building, University
of Calabar, Calabar, Cross River State, Nigeria, April 10-12, 2018.
10. 3
rd International Conference of Professional Statisticians Society of Nigeria (PSSN) on
Statistics, Democracy and Nation Building at Centre for Excellence, Ahmadu Bello University,
Zaria, Nigeria, June, 2019.
11. 4
th International Conference of Professional Statisticians Society of Nigeria (PSSN) on
Statistics In National Security and Industrial Revolution: (Virtual) Anchored from University of
Ilorin Researchers’ Lodge, University of Ilorin, Nigeria. August, 2020

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12. 5
th
International Conference of Professional Statisticians Society of Nigeria (PSSN) on
Statistics for National Security and Socio-Economic Development at Zenith Ict Centre, University
of Nigeria, Nsukka, Nigeria. July, 2021.
13. 6
th International Conference of Professional Statisticians Society of Nigeria (PSSN) on
Statistics for Sustainable Development in The Post-Covid-19 Era At College Hall. Yaba College of
Technology, Yaba, Lagos, Nigeria, September, 2022.
14. Online certificate training on all module (ICDL Cyber Security, ICDL Online Collaboration, ICDL
Presentation, and ICDL ICT in Education) organized by Fozzy at Michael Okpara University of
Agriculture Umudike (MOUAU), which held 24 – 28 January 2022.
15. Digital Bridge Institute : International Centre for Information and Communications Tech. Studies
Training on Advanced Digital Appreciation Programme for Tertiary Institutions ( Statistical
Package For Social Sciences) at Michael Okpara University of Agriculture Umudike From February
28 – March 04 2022.
16. Ethics and Orientation Lecture for Joint Association of Physical and Applied Sciences (JAPASS)
in College of Physical and Applied Sciences (COLPAS).
17. World Statistics Celebration 2020 on 28 0CT. 2020.
18. Third LISA 2020 Symposium 27 September – 3 December 2020 Location: Virtual + Umudike,
Nigeria.
19. LISA 2020 Symposium at Imo State University (IMSU) LISA Owerri, 28 December 2020.
20. International Association for Official Statistics conference. The Hague. The seat of government
and administrative centre of the Netherlands, on the North Sea coast, capital of the province of
South Holland. The 63rd ISI World Statistics Congress held virtually from 11 – 16 July 2021.
21. Worthy Information for Challenging Times”, it will be organized by IAOS together with Statistics
Poland in Krakow, Poland on April 26-28, 2022.
22. The IAOS Training course on small area estimation (SAE) organized by IAOS together with
Statistics Poland in Krakow, Poland on April 25 2022 conducted by Professor Partha Lahiri.
23. Short Course in Introduction to Beyesian Data Analysis Method organized by the 17th International
Association for Official Statistics Conference and 3rd International Statistical Institute Regional
Statistics Conference held in Livingstone, Zambia from 4-6 April 2023. It is jointly organized by
the International Association for Official Statistics, International Statistical Institute and the Zambia
Statistics Agency – ZamStats
Papers Presented at Conferences:
1. Omekara, C. O. and Acha, C. K. “Multivariate Analysis of the Performance of Students Using Hotelling T2
Statistic”. A paper presented at the 34th Annual Conference of the Nigerian Statistical Association (NSA) at
Owerri, Imo State, Nigeria, September 22nd – 27th, 2010.
2. Nwogu, E. C. and Acha, C. K. “Age of Birds at Optimal Production of Eggs: A Polynomial Regression
Analysis”. A paper presented at the 30th Annual Conference of the Nigerian Mathematical Society (NMS) at
Federal University of Technology, Minna, Niger State, Nigeria, July 9th
-22nd 2011.

3. Acha, C. K. “Trend, Level, Differentials and Prediction of Gender Equality and Women Empowerment in
Nigeria” A paper presented at 1st International Conference and Exhibition Uyo 2013 – Organization for
Women in Science for the Developing World (OWSD) at University of Uyo, Uyo, Akwa Ibom State, Nigeria,
June 3rd – 6
th , 2013.

4. Acha C. K., and Nwabueze J. C. “Restricted and Unrestricted Methods of Bootstrap Data Generating
Processes” A paper presented at 39th Annual Conference of the Nigerian Statistical Association (NSA) at
Multipurpose Hall, Local Government Service Commission Osun State Secretariat, Osogbo, Nigeria,
September 9th – 11th, 2015.
5. Acha C. K., “The Efficiency of Malaria Drugs on Children Under Age Five in Nigeria,” D10, Scientific
Session 2.Group 2, A paper presented at 14th Regional Scientific Conference of the Sub-Sahara Africa
Network (SUSAN) of the International Biometric Society, at University of Ibadan (UI) Conference Center,
University of Ibadan, Ibadan, Nigeria, November 11-13, 2015.
6. Acha, C. K. and Acha, I. A “Application of Bootstrap Data Generating Processes on the Nigerian Capital
Market” Day 2-05 April 2017: C9 in NSS book of abstract, A paper presented at 1st International Conference
of the Nigeria Statistical Society (NSS) on Statistical Research and it’s Applications at University of Ibadan
(UI) Conference Center, University of Ibadan, Ibadan, Nigeria, April 3-6, 2017.

6

7. Acha, C. K. “An Investigation of Parametric and Nonparametric Bootstrap Data Generating Processes” Day
2-05 April 2017: C15 in NSS book of abstract, A paper presented at 1st International Conference of the
Nigeria Statistical Society (NSS) on Statistical Research and it’s Applications at University of Ibadan (UI)
Conference Center, University of Ibadan, Ibadan, Nigeria, April 3-6, 2017.
8. Acha C.K. and Umezurike C. “Empirical Assessment of Selected Financial Indicators and Nigeria Gross
Domestic Product” Day 1-10 April, 2018: Group 4- D3 in NSS book of abstract, A paper presented at 2
nd
International Conference of the Nigeria Statistical Society (NSS) on Statistical Methods In Big Data
Research: Challenges & Prospects in Modeling Climate Change, at CES building, University of Calabar,
Calabar, Cross River State, Nigeria, April 10-12, 2018.
9. Acha, C. K. and Amalahu, C. C. “A Study of Interactions between Some Selected Economic Variables and
their Implications on Nigerian Economy” Day 1-10 April, 2018: Group 4- D4 in NSS book of abstract. A
paper presented at 2

nd International Conference of the Nigeria Statistical Society (NSS) on Statistical
Methods in Big Data Research: Challenges & Prospects in Modeling Climate Change, at CES building,
University of Calabar, Calabar, Cross River State, Nigeria, April 10-12, 2018.
10. Acha, C. K., and Iwuji C. “A Meta Goal Programming Model with Mixed-Integer Variables: Application in
Multi-Product Manufacturing Systems” Day 1-10 April, 2018: Group 4- D5 in NSS book of abstract, A
paper presented. A paper presented at 2

nd International Conference of the Nigeria Statistical Society (NSS)
on Statistical Methods in Big Data Research: Challenges & Prospects in Modeling Climate Change, at CES
building, University of Calabar, Calabar, Cross River State, Nigeria, April 10-12, 2018.
11. Acha, C. K., and Iwuji C. “A Mixed-Integer Lexicographic Goal Programming Model for Achieving
Estimated Targets in Multi-Product Systems” Day 2-11 April, 2018: Group 4- D14 in NSS book of abstract.
A paper presented at 2

nd International Conference of the Nigeria Statistical Society (NSS) on Statistical
Methods in Big Data Research: Challenges & Prospects in Modeling Climate Change, at CES building,
University of Calabar, Calabar, Cross River State, Nigeria, April 10-12, 2018.
12. Nwezza, E.E. and Acha, C. K. “On Robust Parameter Estimation for Phase I Linear Profile Monitoring” Day
2-11 April, 2018: Group 4- C26 in NSS book of abstract, A paper presented at 2

nd International Conference
of the Nigeria Statistical Society (NSS) on Statistical Methods In Big Data Research: Challenges & Prospects
in Modeling Climate Change, at CES building, University of Calabar, Calabar, Cross River State, Nigeria,
April 10-12, 2018.
13. Acha, C. K. (1999). “Time Management” Ethics and Orientation Lecture for Joint Association of Physical
and Applied Sciences (JAPASS) in College of Physical and Applied Sciences (COLPAS).
14. Acha, C. K. (2020). “Connecting the World with Data We Can Trust (The Nigerian Case)” World Statistics
Celebration 2020 through IAOS, Nigeria. A virtual paper presented on 28 0CT. 2020.
15. Acha, C. K. (2020). “Introduction to SPSS and R-Software packages”. A paper presented at third LISA 2020
Symposium 27 September – 3 December 2020 Location: Virtual + Umudike, Nigeria.
16. Acha, C. K. (2020). “Introduction to Machine Learning”. . A paper presented at first LISA 2020 Symposium
at Imo State University (IMSU) LISA Owerri, 28 December 2020.
17. Acha, C. K. and Popoola O. P. (2021) “Revolutionizing Official Statistics in Nigeria” – invited paper-
[IAOS – International Association for Official Statistics, Nigeria] The Hague. The seat of government and
administrative centre of the Netherlands, on the North Sea coast, capital of the province of South Holland.
The 63rd ISI World Statisics Congress held virtually from 11 – 16 July 2021.
18. Acha, C. K. and Popoola O. P. (2022) “Challenges of big data for official statistics in Africa”, focusing on
“Worthy Information for Challenging Times”, organized by IAOS together with Statistics Poland in Krakow,
Poland on April 26-28, 2022.
19. Acha and Popoola (2022). “Challenges of achieving sustainable development goals in Africa in an uncertain
age”, focusing on “Worthy Information for Challenging Times”, organized by IAOS together with Statistics
Poland in Krakow, Poland on April 26-28, 2022.
20. Acha, C. K. (2023). “Africa agenda 2063 and SDGs : prospects and Challenges” ,A paper presented at
the 17th International Association for Official Statistics Conference and 3rd International Statistical Institute
Regional Statistics Conference (Better Lives 2030: Mobilising the power of data for Africa and the
world) held in Livingstone, Zambia from 4-6 April 2023. It is jointly organized by the International
Association for Official Statistics, International Statistical Institute and the Zambia Statistics Agency –
ZamStats.
21. Acha, C. K. and Isaac Fwemba (2023). “ Bayesian Approaches for using historical controls to evaluate the
public health intervention effectiveness” A paper presented at the 17th International Association for Official
Statistics Conference and 3rd International Statistical Institute Regional Statistics Conference (Better Lives

7

2030: Mobilising the power of data for Africa and the world) held in Livingstone, Zambia from 4-6 April
2023. It is jointly organized by the International Association for Official Statistics, International Statistical
Institute and the Zambia Statistics Agency – ZamStats.
22. Acha C.K., Mensah, F. B., Madu,B., Barrow, S., and Sonii, B. (2023). “Challenges of Measuring Specific
Economic Activities of Sub-Regional West African Countries: The Gambia, Nigeria, Liberia and Ghana”,
accepted for presentation at the 64th WSC 2023, to be held 16-20 July in Ottawa, Canada. Available Online@
https://www.isi2023.org/proposals/15/?category=20
23. Awad-Shakhshir, O., Carfagna, E., Jansen, R., Popoola, O. P., Hanivan, H., and Acha, C.K. (2023) “Fourth
Industrial Revolution, Data Science and the Future of Official Statistics”, accepted for presentation at the
64th WSC 2023, to be held 16-20 July in Ottawa, Canada. Available Online@
https://www.isi2023.org/proposals/15/?category=20
24. Acha, C.K. (2023) “Empowering Data Communities: A Human-Centric Approach to Data Relationships”,
the 9th Global Conference on Statistical Data and Metadata Exchange (SDMX) holding on 29 October
to 02 November 2023 at the Art Hotel in Manama, Bahrain. The Global Conference is a bi-annual event
for the official statistics community worldwide to share information on recent and upcoming SDMX
developments.
National Assignment:
1. Africa and Nigeria Delegate at the 18th International Association for Official Statistics Conference,
“Worthy Information for Challenging Times”, organized by IAOS together with Statistics Poland in Krakow,
Poland on April 26-28, 2022.
2. Africa and Nigeria Delegate at the 17th International Association for Official Statistics Conference and 3rd
International Statistical Institute Regional Statistics Conference (Better Lives 2030: Mobilising the power of
data for Africa and the world) held in Livingstone, Zambia from 4-6 April 2023. It is jointly organized by
the International Association for Official Statistics, International Statistical Institute and the Zambia Statistics
Agency – ZamStats.
3. Africa and Nigeria Delegate at the 64th International Statistical Institute’s (ISI) World Statistics Congress
(WSC). Theme: Statistical science for a better world held in Ottawa, Ontario, Canada from July 16 to July
20, 2023.
4. Nigeria representative at the 9th Global Conference on Statistical Data and Metadata Exchange
(SDMX) holding on 29 October to 02 November 2023 at the Art Hotel in Manama, Bahrain.
Administrative experience within and outside the university:
1. Academic adviser for 2010/2011 statistics students from 2011 to 2014.
2. Acting Head of Department of Mathematics/Computer/Statistics/Informatics (MCSI), Federal University
Ndufu-Alike Ikwo (FUNAI), Ebonyi State.
3. Acting Head of Department of Statistics Department, Michael Okpara University of Agriculture, Umudike
(MOUAU).
4. Chairman Accreditation Committee, Department of Statistics, Federal University Ndufu-Alike Ikwo
(FUNAI), 2016 with full accreditation.
5. Chairman Taskforce committee Computer on the actual cause of the outstanding result Science Department
for 2015/2016 to 2017/2018 period under consideration and proffer immediate solution (2021).
6. COLPAS representative to College of Animal Science and Production (CASAP) 2013/2014 to 2015/2016.
7. Coordinator International Biometric Society (IBS) MOUAU Sub-Sahara African Network (SUSAN).
8. Coordinator Nigerian Statistical Association (NSA) MOUAU branch.
9. Dean Postgraduate (PG) School representative in external examination of PG students in various departments
in MOUAU 2015 till date.
10. Ethics lecture delivered in College of Physical and Applied Sciences (COLPAS) 2018 and 2019
11. Ethics lecture for Joint Association of Physical and Science Students (JAPASS) 2018, 2019, 2020, 2021.
12. Exam officer for 2010/2011 statistics students from 2011 to 2014.
13. External Examiner for undergraduate students in Statistics Department, Federal College of Agriculture Isiagu
(FCAI)) from 2017 – Date
14. Head of the Disciplinary committee of the Joint Association of Physical and Applied Science Students
(JAPASS) from 2018 – 2023.
15. Internal examiner for PGD/M.Sc/Ph.D students in Statistics department 2015.
16. International Biometric Society (IBS-SUSAN) quarterly meetings, FUNAB, Nigeria 09/02/2016.
17. International Biometric Society (IBS-SUSAN) quarterly meetings, UNIPORT, Nigeria 2015.
18. Lecture delivered in Imo State University (IMSU) 2020 during LISA Symposium on Machine Learning.

8

19. Member Local organizing committee for Laboratory for Interdisciplinary Statistical Analysis [MOUAU-
LISA] from 27 September – 3 December 2020 Location: Virtual + Umudike

20. Member of IAOS Scientific Program Committee 2022, Statistics Poland in Krakow, Poland
21. Member of International Association for Official Statistics Scientific Program Committee 2022 conference
in Krakow, Poland
22. Member, Editorial Board Annals of Statistical Theory and Application (ASTA)
23. Organizer of International Biometric Society (IBS), Sub-Sahara African Network (SUSAN) Second quarterly
meeting in MOUAU, Umudike.
24. Organizer of International Biometric Society (IBS), Sub-Sahara African Network (SUSAN) Second quarterly
meeting in MOUAU, Umudike.
25. Presentation on the title “Statistical Analysis in Agricultural and Biological Sciences” in Michael Okpara
University of Agriculture Umudike, 2019.
26. Reconciliation officer for statistics results from 2011 to 2014.
27. Reviewer, Academic Staff Union of Universities (ASUU) Journal
28. Secretary of the scientific committee of Nigeria Statistical Society (NSS) 2018 conference.
29. Secretary/member local organizing committee of NSA MOUA, Umudike chapter.
30. Staff Adviser of the Joint Association of Physical and Applied Science Students (JAPASS) from 2018 – 2023
31. Supervisor for PGD/M.Sc/Ph.D students in Statistics department, MOUAU from 2015 till date.
32. Treasurer Expanded local organizing committee (ELOC) of the Renewable and Alternative Energy Society
of Nigeria (RAESON) for 2019 conference in MOUAU.
33. Vice president, Professional Statistical Society of Nigeria (PSSN).
34. Virtual Lecture Delivered on The World Statistics Celebration 2020, titled Connecting The World With
Data We Can Trust (The Nigerian Case) through LISA, MOUAU 28 0ct. 2020.
35. Welfare Chairman of Nigerian Statistical Society (NSS).
36. Welfare Chairman of Professional Statistical Society of Nigeria (PSSN).
37. Organizer, Hankali Intel, University of HULL, UK In Partnership With Michael Okpara University Of
Agriculture Umudike (3-Day Data Analytics Bootcamp).
CONTACT INFORMATION
Office Address: Room 113, COLPAS Block 2 Building, MOUAU.
Email: acha.kelechi@mouau.edu.ng
Alternative Email: uniquechigo@gmail.com