For an experiment involving 2 levels of factor A and 3 levels of factor B with a sample of n = 5 in ...

For an experiment involving 2 levels of factor A and 3 levels of factor B with a sample of n = 5 in each treatment condition, what is the value for dfwithin?
 
  a. 20 c. 29
  b. 24 d. 30

Question 2

In a two-factor ANOVA, which of the following is not computed directly but rather is found by subtraction?
 
  a. SSbetween treatments c. SSB
  b. SSA d. SSAxB

Question 3

For a research study with 2 levels of factor A, 3 levels of factor B, and n = 5 in each treatment condition, what are the df values for the F-ratio evaluating the main effect for factor A?
 
  a. 1, 4 c. 1, 29
  b. 1, 24 d. 2, 29

Question 4

In a two-factor experiment with 2 levels of factor A and 2 levels of factor B, three of the treatment means are essentially identical and one is substantially different from the others. What result(s) would be produced by this pattern of treatment means?
 
  a. A main effect for factor A
  b. A main effect for factor B
  c. An interaction between A and B
  d. The pattern would produce main effects for both A and B, and an interaction.