You are given the following data of the number of male and female students in a University

Question:

You are given the following data of the number of male and female students in a University

Work out how many male and female students would be selected from each category if we follow stratified proportionate sampling method and take 10% of the universe equivalent to the sample size.

Solution:

The sample size is 10% of the universe hence 200 students woud be selected in the sample. Since 6 strata are formed and we want to follow proportionate stratified sampling method, we will take 10% from each stratum. The number of students selected shall be as follows:

The advantage of stratified samples is that when they are properly designed, they more accurately reflect characteristics of the population from which they were chosen than do other kinds of sampling.