Question

question #4
use the residual plot below to state what conclusion can be made about the regression equation.
residual plot

the regression equation is a bad model because there appears to be no obvious pattern.
the regression equation is a good model because there appears to be no obvious pattern.
the regression equation is a bad model because there appears to be an obvious pattern.
the regression equation is a good model because there appears to be an obvious pattern.

Explanation:

In residual plots, if there is no obvious pattern (random scatter), the regression equation is a good model. If there is an obvious pattern, the regression equation is a bad model. Here, there is an obvious pattern in the residual plot.

Answer:

The regression equation is a bad model because there appears to be an obvious pattern.