In simple linear regression, the:
A)least squares line is used to predict values of the independent variable.
B)residual plot will reveal information about the basic model assumptions.
C)least square line will not pass through the point (average x, average y).
D)value of r (correlation coefficient) cannot be 0.
E)all of the above

Question

Quizplus · Accepted Answer

The residual plot, which graphs the residuals (the differences between observed and predicted values) on the vertical axis and the independent variable on the horizontal axis, is used to assess the fit of a linear model and check assumptions such as linearity, homoscedasticity, and the absence of outliers.

In Simple Linear Regression, The