Question

least - squares ok? following is a residual plot. was it appropriate to compute the least - squares regression line? explain. residuals versus x (response is y) it select appropriate to compute the least - squares regression line because the residual plot select a noticeable pattern.

Explanation:

Step1: Recall residual - plot rule

For a least - squares regression line to be appropriate, the residual plot should show no pattern.

Step2: Analyze the given residual plot

The points in the given residual plot appear to be randomly scattered around the horizontal axis. There is no obvious curve, cluster, or trend.

Answer:

Yes, was not