Author Question: If covariance between two variables is near 0, then it implies that a. there exists a positive ... (Read 110 times)

V@ndy87 · **on:** Jun 24, 2018

If covariance between two variables is near 0, then it implies that
a. there exists a positive relationship between the variables.
b. the variables are not linearly related.
c. the variables are negatively related.
d. the variables are strongly related.

Question 2

In backward selection stepwise regression with ten predictor variables, which of the following statements is correct?
a. The procedure starts with 10 predictor variables and eliminate one predictor at each iteration.
b. The procedure starts with 2 predictor variables and add one predictor at each iteration.
c. The procedure starts with 1 predictor variables and add one predictor at each iteration.
d. The procedure starts with no predictor variables and add one predictor at each iteration.