Question

Karen wants to estimate the mean number of siblings for each student in her school what is the sample

Answer 1

It is given that karen wants to estimate the mean number of siblings for each student in her school.

Then sample can be determine for this experiment as following types

He has to record the number of siblings for each of randomly selected students in the school . for which he has to choose the sample size from population. Here the population is the total number of student in school ,from which he has to select sample .

Suppose The 200 selected students is the sample, and the mean number siblings for all the students is calculated by him ,which is called as the statistic.this statistic describe the sample from which inferences about the population are drawn

In other way he can acquires his sample of students by choosing 50 freshmen, 50 sophomores, 50 juniors and 50 seniors. This is an example of Cluster sampling, since the random sample from this 4 cluster is chosen.

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