Suppose all students who attend Stat 001 lectures during fall term 2007 are give

Question

Suppose all students who attend Stat 001 lectures during fall term 2007 are given cups of green tea at the beginning of each lecture. Then spring term 2008 students are given cups of fake green tea, which look and taste just like real green tea but have no nutritional benefits. Exam scores for both groups are compared.

1. The response variable in this study is

A) the green tea variable.

B) time of lecture (8:30 or 10:30).

C) the lecturer.

D) exam performance.

2. The explanatory variable in this study is:

A) the green tea variable.

B) time of lecture (8:30 or 10:30).

C) the lecturer.

D) exam performance.

Explanation / Answer

In the study, we are treating the students with two different inputs and examining the outcome of both the experiments-

1)

Response is the exam scores

So, that will be option (D)

2)

Explanatory variable is the green tea and fake green tea input

That will be (A)

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