In a Multiple Regression Problem Involving Two Independent Variables, If

Multiple Choice

In a multiple regression problem involving two independent variables, if b₁ is computed to be +2.0, it means that

A) the relationship between X₁ and Y is significant.
B) the estimated mean of Y increases by 2 units for each increase of 1 unit of X₁, holding X₂ constant.
C) the estimated mean of Y increases by 2 units for each increase of 1 unit of X₁, without regard to X₂.
D) the estimated mean of Y is 2 when X₁ equals zero.