Question: if we know that the relationship between two sets of numbers is r=.98, and the best fit regression line is y=2x+4 check all the following

if we know that the relationship between two sets of numbers is r=.98, and the best fit regression line is y=2x+4

check all the following that are true:

A. the line makes good predictions

b. for a change of 2 in x, y changes by 4

c. 86% of variation in x is explained by y

d. it's a positive relationship.

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