Sampling Techniques

  DOUBLE SAMPLING FOR RATIO ESTIMATOR                                                                                            ALIFATHIMA ABSANA H                                                                                                       2048111 I...

 Meby Joseph Manoj Introduction           Systematic sampling  is a type of probability  s ampling method in which  s ample members from a larger population are selected according to a random starting point but with a fixed, periodic interval. This interval, called the sampling interval, is calculated by dividing the population size by the desired sample size.             Probability proportional to size ( pps ) sampling is a method of sampling from a finite population in which a size measure is available for each population unit before sampling and where the probability of selecting a unit is proportional to its size .               It is known that sampling clusters with probability proportional to a measure of size often yields considerable reduction in the variance of e...

                                                          MULTI-STAGE SAMPLING                                                                                          -CERIN THERESA DOMINIC 2048120 INTRODUCTION:- In the field of data analysing, we all extract samples from a given  population for summing up the characteristic features of a population. But is it possible to evaluate  all the selected samples? No ,it is not. It’s more expensive , time-consuming and much effort needed process. So under  these circumstances ,it is always better to choose Multi-stage sampling. Here we divide the population...