In a one factor between groups design, the variance produced by ...

[burton19126]

In a one factor between groups design, the variance produced by anything else besides the treatment known as _____ variance.
 
  a. within c. error
  b. residual d. all of these

Question 2

In the one factor between groups design, systematic variance between groups can be reduced by _____.
 
  a. using Tukey's HSD test c. making multiple comparisons
  b. improving the design d. using ANOVA instead of t tests

[voltaire123]

Answer to Question 1

D
Within group variance has alternate but equivalent names.

Answer to Question 2

B
Systematic variance is variance produced by confounding variables. This source of variance must be reduced (eliminated) by properly controlling all conditions except the treatment condition.