In simple regression analysis (Y = a + bX),the estimate of the intercept coefficient a is equal to A) Y_mean - bX_mean. B) X_mean - bY_mean. C) Y_mean + bX_mean. D) X_mean + bY_mean. E) Y_mean - X_mean / b.

Question

Quizplus · Accepted Answer

The estimate of the intercept coefficient $a$ in simple regression analysis is calculated as the mean of $Y$ minus the product of the slope coefficient $b$ and the mean of $X$, which is represented by choice A: $Y_{mean} - bX_{mean}$.

In Simple Regression Analysis (Y = a + BX),the Estimate