Author Question: A regression model examining the amount of weight a football player can bench press found that 10 cm ... (Read 25 times)

OSWALD · **on:** Jul 25, 2018

A regression model examining the amount of weight a football player can bench press found that 10 cm differences in chest size are associated with 8 kg differences in weight pressed. Which is true?

I. The correlation between chest size and weight pressed is r = 0.80
II. As a player gets stronger and presses more weight his chest will get bigger.
III. A positive residual means that the player pressed more than predicted.
A) III only B) I only C) I and III D) none E) I and II

Question 2

Variables X and Y have r = 0.40. If we decrease each X value by 0.1, double each Y value, and then interchange them (put X on the Y- axis and vice versa) the new correlation will be

A) 0.15 B) 0.60 C) -0.40 D) 0.40 E) 0.80

cadimas · **Reply #1 on:** Jul 25, 2018

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