Which three quantities are needed in order to calculate the value of the Y-intercept for the linear regression prediction equation?
A)The slope,the mean of X,and the total number of observations in the data
B)The slope,the mean of Y,and the total number of observations in the data
C)The mean of X,the mean of Y,and the total number of observations in the data
D)The mean of X,the mean of Y,and the slope

Question

Quizplus · Accepted Answer

The Y-intercept of a linear regression equation can be calculated using the formula Y-intercept = mean(Y) – slope * mean(X). Therefore, the three quantities needed are the mean of X, the mean of Y, and the slope. Choice D is the only option that includes all three of these quantities.

Which Three Quantities Are Needed in Order to Calculate the Value