You take a random sample of 100 students at your university and find that their

Question

You take a random sample of 100 students at your university and find that their average GPA is 3.1. If you use this information to help you estimate the average GPA for all students at your university, then you are doing what branch of statistics? Descriptive statistics Inferential statistics Sample statistics Population statistics The classification of student major (accounting, economics, management, marketing, other) is an example of a(n) nominal variable. ordinal variable. continuous variable discrete variable.

Explanation / Answer

1. Estimation is a part of Inferential statistics. If we want to estimate the average GPA for all students at the university using sample data, then we are drawing inference about the population mean.

So the correct choice is (B) Inferential statistics. (Ans).

2. The classification of student major on different subjects will yield categorical variable which is unordered. So this example will give an ordinal variable with 5 categories.

So the correct choice is (B) Ordinal variable. (Ans).

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