Tag Archives: Stratification

On The Comparison of Some Methods of Allocation in Stratified Random Sampling for Skewed Population (Published)

A study to evaluate and compare some methods of allocation in stratified random sampling suitable for the estimation of population total of a skewed population was carried out in this paper. We looked at three methods of allocation in the above scheme namely; Optimum allocation, N-proportional allocation, and variable (X) proportional allocation methods. We investigate the condition under which one method of allocation is better than the other using three sets of real life data on staff and student enrolment, collected from the record of the Teaching Service Commission (TESCOM) Oyo State Nigeria. The third set of data is on Income and expenditure of Industrial and General Insurance (IGI) Plc.   We found out that optimum allocation is the least and the best despite variation observed in the sizes of nh within the strata.  

Keywords: Allocation, Estimation, Sampling, Skewness, Stratification