Question

which of these graphs represents the residual plot for a scatter plot that is fit will by a linear model?
residual plots
graph a
graph b
graph c
graph d

Explanation:

A good residual plot for a linear model should have residuals randomly scattered around the horizontal axis (residual = 0). This indicates that the linear model is a good fit. Graph A has points randomly scattered around 0. Graph B has a "U - shaped" pattern (non - random), Graph C has a pattern where residuals increase as the independent variable increases (non - random), and Graph D has a pattern where residuals decrease as the independent variable increases (non - random).

Answer:

A. Graph A