Position: Lecturer Department: Mathematics & Actuarial Science Contact Address: P.O. Box 43844-00100, Nairobi, Kenya Email: Onyango. This email address is being protected from spambots. You need JavaScript enabled to view it.  View full CV

RESEARCH PUBLICATIONS

Articles in referenced Journals

Year 2021

(1) Kimutai, A, Onyango, C. O., Wafula, M.  (2021) Estimation of Finite Population Total in Presence of Missing Values in Two-Phase Sampling. Science Journal of Applied Mathematics and Statistics 2021; 9(5): 126-132. ISSN: 2376-9491 (Print); ISSN: 2376-9513 (Online).

Year 2020

1) David A. Alila, C.O.  Ouma & E.O. Ombaka (2020) Efficiency of Domain mean estimators in the presence of non-response using two stage sampling with non-linear and linear cost functions. Annals of Data Science. Springer.

(2) Bii, K., Ouma C. & Odhiambo, (2020) J. Estimation of a Finite Population Mean under Random Nonresponse Using Kernel Weights.  Journal of Probability and Statistics, vol. 2020,

Year 2019:

(3) Bii, K. Ouma C. & Odhiambo, J. (2019). Boundary Bias correction using weighted method in the presence of nonresponse in two stage cluster sampling. Journal of Probability and Statistics, vol. 2019, pp1-8.

Year 2018:

(4) Bii, K., & Ouma, C.  (2018). Estimating a finite population mean under random non-response in two stage cluster sampling with replacement. Journal of Physics. Conf. series 1132 (2018) 012071.

Year 2017:

(5) Anekeya, D, Ouma, C & Nyongesa, K (2017). Optimal allocation in Domains Mean estimation using double sampling with non-linear cost function in the presence of non-response. American Journal of Theoretical and Applied Statistics. Vol. 7(2), pp 45-57.

(6) Anekeya, D, Ouma, C & Nyongesa, K (2017). Domain mean estimation using double sampling with nonlinear cost function in the presence of non-response.  Science Journal of Applied Mathematics and Statisics. Vol. 6(1), pp 28-42.

(7) Bii , K., & Ouma, C.  (2017). Model-Assisted Estimation of Population Mean in Two- Stage Cluster Sampling. Pakistan Journal of Statists Vol.XIII, 1, PP 127-139.

(8) Nanok, J., & Ouma, C (2017). A socio-Economic and environmental analysis of effects of oil exploration on the local community in Lokichar, Turkana County, Kenya. International Journal of Management, Economics and Social Sciences. Vol. 6(3), pp 144-156.

Year 2016:

(9) Beatrice, K., Jemimah, W., & Ouma, C (2016). A multivariate analysis of the effects of mobile phone money transfer on Micro and Small Enterprises, Thika Town (Kenya). American Journal of theoretical statistics. Vol.5(3), pp 108-114.

Year 2014:

(10) Oyoo D., & Ouma, C. (2014). Estimation of Population Total in the Presence of Missing Values Using a Modified Murthy's Estimator and the Weight Adjustment Technique. American Journal of Applied Mathematics and Statistics, 2014, Vol. 2, No. 3, 163-167.

(11) Teresio M.,John, K & Ouma, C. (2014) Mixture Regression-Cum-Ratio estimator using Multi-Auxiliary variables and attributes in single-phase sampling.  Open Journal of statistics. Vol 4, pp 367-376.

Year 2010:

(12) Ouma, C., Otieno , R. and Orwa,  O., (2010). Generalized Model based Confidence Intervals in two Stage Cluster Sampling.. Pakistan Journal of Statistics and Operational Research. Volume 6, Number 2, pages 123-139.

(13) Ouma, C.., Otieno, O. and Orwa, O., (2010). Bootstrapping in Model based estimation of a finite population total in two stage Cluster Sampling with unequal Cluster sizes.. Far East Journal of Theoretical Statistics. Volume 33, Number 2, Pages 171-184.

Year 2005:

(14) Ouma, C. & Wafula C.,(2005) Bootstrap confidence intervals for model-based surveys. East Africa Journal of Statistics Vol 1 No 1,

Conference presentations.

Ouma, C. (2011) Inference for model Based Surveys in Two Stage Cluster Sampling. Proceedings of the First Kenyatta University International Mathematics Conference, Vol 1 pp 215- 223.

Training in Higher Education.

 4^th -7^th March 2014 Faculty Development program-Strathmore Business School

Conferences, Seminars and Workshops attended.

•  8^th June 2011-10^th June 2011: 1^st Kenyatta University International Mathematics Conference.
• 18^th August -20^th August 2011:1^st Strathmore University Mathematics conference.
• 23^rd -27^th July 2012: Strathmore Statistical Modelling Workshop
• 17^th June-21^st June 2013: First Kenyatta University Workshop on Mathematical modelling
• 1^st September to 5^th September 2014: Strathmore University International school on Mathematical Epidemiology
• 3rd August to 7^th August 2015 Strathmore International Mathematics Conference

QUALITY TEACHING, LEARNING AND MENTORSHIP

• 1^st December 2010-3nd August 2011- Tutorial fellow- Department of Mathematics, Kenyatta University
• August 2011-to date: Lecturer Department of Mathematics, Kenyatta University.
• Attained student evaluation of above 70% in courses taught.