Question 1

If the correlation coefficient is 0.930, what is the unexplained variation?

Accepted Answer

A)   7%
B)   93%
C)   13.5%
D)   86.5%E) A) and C)
F) B) and D)

Question 2

When r is not significantly different from 0, the best predictor of y is the ____________ of the data values of y.

Accepted Answer

The answer of When r is not significantly different from...

Question 3

In a multiple regression model y' = -11 + 5x1 + 21x2 + 11x3 + 3x4, if the x1 value changes by 2, then the predicted value for y will change by

Accepted Answer

A)   10
B)   42
C)   -1
D)   29E) None of the above
F) B) and C)

Exam 10: Correlation and Regression

When r is not significantly different from 0, the best predictor of y is the ____________ of the data values of y.