For linear regression calculated for a sample of n = 20 pairs of X and Y values,what is the value for degrees of freedom for the predicted portion of the Y-score variance,MS regression?
A)1
B)2
C)19
D)18

Question

Quizplus · Accepted Answer

The degrees of freedom for the predicted portion of the Y-score variance, MS regression, in linear regression is always 1, because it is based on the linear relationship between X and Y, which is defined by two parameters: the slope and the intercept. However, the degrees of freedom for MS regression is calculated as the number of parameters estimated from the data minus 1, which for a simple linear regression is 2 - 1 = 1.

For Linear Regression Calculated for a Sample of N =