____ can be determined by calculating the difference between the results obtained in the ...

____ can be determined by calculating the difference between the results obtained in the experimental and control groups.
 
  a. Between-groups variance.
  b. Within-groups variance.
  c. Effect size.
  d. Power.

Question 2

The magnitude of the change that the independent variable has on the dependent variable is called:
 
  a. between-groups variance.
  b. within-groups variance.
  c. effect size.
  d. power.

Question 3

A large F can be produced by:
 
  a. decreasing power.
  b. reducing within-groups variance.
  c. increasing between-groups variance.
  d. increasing between-groups variance, reducing within-groups variance, or both.

Question 4

If within-groups variance is large relative to between-groups variance, then there is increased probability of:
 
  a. rejecting the null hypothesis.
  b. making a Type I error.
  c. making a Type II error.
  d. accepting the research hypothesis.