Question

Three plots are listed below. Which of them can be used to check the condition that the variation within each group is the​ same?

I.	residual plot​ (residuals versus predicted​ values)
II.	normal probability plot of the residuals
III.	​side-by-side box-and-whisker plots

Select all that apply.

A.

I. residual plot​ (residuals versus predicted​ values)

B.

II. normal probability plot of the residuals

C.

III.​ side-by-side box-and-whisker plots

D.

None of the above.

Part B: Which of them can be used to check the condition that the population data within each group are normally​ distributed?

Answer 1