Effectual variance estimation strategy in two-occasion successive sampling in presence of random non response |
| |
Authors: | G N Singh A K Sharma A Bandyopadhyay |
| |
Institution: | 1. Department of Applied Mathematics, Indian School of Mines, Dhanbad, Jharkhand, India;2. Department of Mathematics, Asansol Engineering College, Asansol, West Bengal, India |
| |
Abstract: | Present investigation deals with the problem of random non response in estimation of population variance on current occasion in two-occasion successive sampling. To reduce the negative impact of random non response on both occasions, regression type imputation method has been suggested. Using auxiliary information, efficient estimation strategies have been developed for estimation of population variance on the current occasion. Estimator for the population variance is also derived as a special case when random non response occurs only on the current occasion. Empirical studies are carried out to show the dominance of suggested estimators over sample variance and exponential type estimators. Results are interpreted. |
| |
Keywords: | Auxiliary variable Imputation Mean square error Random non response Successive sampling Variance estimation |
|
|