Question: What are all the values that a correlation r can possibly take? What are all the values that a standard deviation s can possibly take?

What are all the values that a correlation r can possibly take?

What are all the values that a standard deviation s can possibly take?

What are all the values that a mean can possibly take?

Guess the correlation: Measurements in large samples show that the correlation

1. between this semester's GPA and the previous semester's GPA of an upperclass student is about ______.

2. between IQ and the scores on a test of the reading ability of seventh-grade students is about _______.

3. between the number of hours a student spends studying per week and the average number of hours spent studying by his or her roommates is about ______.

The answers will be r=0.2, r=0.5, r=0.8

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