The effect of increased variation between groups. Set the standard deviation for the One-Way ANOVA applet at a middle value. Drag the black dots so that they are approximately equal.
(a) What is the F statistic? Give its P-value.
(b) Drag the mean of the second group up and the mean of the third group down. Describe the effect on the F statistic and its P-value. Explain why they change in this way.