Question

when you plot residuals on a scatter plot and saw a pattern what does that mean?

Answer 1

When you plot residuals on a scatterplot and saw a pattern, it means that linear regression model is not appropriate for the data; a non-linearmodel is a better fit.

Explanation:

A residual plot is a graph that shows the residuals on the vertical axis and indepedent variable on the horizontal axis.If the points in a residual plot are randomly dispersed around thehorizotal axis, a linear regression model is appropriate for the data; otherwise, a non linear model ismore appropriate.