Author Question: In a multiple regression problem involving two independent variables X1 and X2, what does it mean if ... (Read 105 times)

xroflmao · **on:** Jun 24, 2018

In a multiple regression problem involving two independent variables X1 and X2, what does it mean if b2 is computed to be -1.5?

A) The relationship between X2 and Y is significant.
B) The estimated value of Y decreases by an average of 1.5 units for each unit increase of X1, holding X2 constant.
C) The estimated value of Y decreases by an average of 1.5 units for each unit increase of X2, holding X1 constant.
D) The estimated average value of Y is -1.5 units when X1 = X2 = 0.

Question 2

The expected value of the sum of two random variables is the sum of their expected values.

Indicate whether the statement is true or false