More on ANOVA

Questions

Question 1 out of 4.
Increasing the correlation between measures:

increases power.

decreases power.

has no effect on power.

Question 2 out of 4.
Increasing the population variance:

increases power.

decreases power.

has no effect on power.

Question 3 out of 4.
Increasing the difference between population means:

increases power.

decreases power.

has no effect on power.

Question 4 out of 4.
Assuming the hypothesized direction of the effect is correct, a one-tailed test is:

more powerful than a two-tailed test.

less powerful than a two-tailed test.

has the same power as a two-tailed test.