If $r = - 0.4$ For the Relationship Between the Time of Day and Amount

question 371

Multiple Choice

If $r = - 0.4$ for the relationship between the time of day and amount of coffee in an office worker's mug, which are true?
I. $r ^ { 2 } = - 16 \%$
II. There is a linear relationship between time and amount of coffee.
III. $16 \%$ of the variability is correctly predicted by time of day.

• A) none of these
• B) I
• C) II
• D) III
• E) II and III only

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