Question
If the coefficient of correlation is -0.80, the percentage of the variation in y that is...
If the coefficient of correlation is -0.80, the percentage of
the variation in y that is explained by the variation in x
is:
A. -64%
B. 80%
C. 64%
D. -80%
If all the points in a scatter diagram lie on the least squares
regression line, then the coefficient of correlation must be:
A. -1
B. either 1 or -1
C. 1
D. 0
Homework Answers
Answer #1
1] C. 64%
2] B. either 1 or -1
Explanation:
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