Question

What is the generic interpretation of a slope coefficient (i.e., b1 or b2) for a multiple regression?

Answer 1

A line in a two dimensional or two-variable space is defined by the equation Y=a+b*X; in full text: the Y variable can be expressed in terms of a constant (a) and a slope (b) times the X variable. The constant is also referred to as the intercept, and the slope as the regression coefficient or B coefficient.