Which of the following yields a systematic sample? The best 15 students, accordi

Question

Which of the following yields a systematic sample? The best 15 students, according to the opinion of the instructor, in a class are selected. All studrnts in a class are divided into groups of 15. One student is randomly chosen Hom the 1st group, the remaining observations are every 15th student thereafter. All students in a class are grouped according to their gender. A random sample of 8 is selected from the males and a separate random sample of 7 is drawn from the females A random sample of 15 students is selected from a class without replacement.

Explanation / Answer

All students in a class are divided into groups of 15. One student is randomly chosen from the 1st group, the remaining observations are every 15th student thereafter.--------- this is the systematic sampling .

Because, Systematic sampling is a type of probabilitysampling method in which sample members from a larger population are selected according to a random starting point and a fixed periodic interval. This interval, called the sampling interval, is calculated by dividing the population size by the desired samplesize.

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