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Simple Random Sampling A sampling procedure that assures that each element in the population has an equal chance of being selected is referred to as simple random sampling .Let us assume you had a school with a 1000 students, divided equally into boys and girls, and you wanted to select 100 of them for further study. You might put all their names in a drum and then pull 100 names out. Not only does each person have an equal chance of being selected, we can also easily calculate the probability of a given person being chosen, since we know the sample size (n) and the population (N) and it becomes a simple matter of division: n/N x 100 or 100/1000 x 100 = 10% Systematic Sampling At first sight this is very different. Suppose that the N units in the population are numbered 1 to N in some order. To select a...

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