the question is: the following are resitant:

a. lsrl

b. correlation coefficient

c. both lsrl and corel. coef

d. neither

e. it depends

Suppose we fit the least squares regression line to a set of data. What is true if a plot of the residuals shows a curved pattern?

the lsrl might not be a good model

or a straight line is not a good model for the data

Thanks a lot!!