Finding the correct sample for your research study is a hectic job, is not it? Yes, it is a very challenging and arduous task. It is easy to do when you are working with a small group of people, and your area of research is not too broad. However, when you are dealing with large population sizes, you need a more effective way to collect samples, and one of those effective ways is stratified random sampling.
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My name is John Hockey. I am from London. I have completed my MBA Degree recently. Now I want to serve the students in writing all their assignments. Most students face many problems with their assignments on time.