Here are two data sets one is representative of a sample and one a population. D

Question

Here are two data sets one is representative of a sample and one a population. Decide on the classification of the data set and find its standard deviation. What makes one a sample and the other a population? Please summarize your work by telling us what value is there to knowing the distributions standard deviation. Set A: In a class of statistic students the grades of all student were reported as {87, 98, 99, 67, 78, 65, 87, 91, 96, 85}. Find the standard deviation for the data. Set B: In a class of 30 statistic students 10 of the students had grades of {87, 98, 99, 67, 78, 65, 87, 91, 96, 85}. Find the standard deviation for the data

Explanation / Answer

The set B contains grades of 10 students which is chosen from a class of 30 statistic students.

So,Set B is sample data whereas set A contains the grades of all 10 students in a class.

Standard devaiation of set A and set B: 11.4110

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