A repeated-measures design has the maximum advantage over an independent-measures design when ____. ...

A repeated-measures design has the maximum advantage over an independent-measures design when ____.
 
  A) many subjects are available and individual differences are small
  B) very few subjects are available and individual differences are small
  C) many subjects are available and individual differences are large
  D) very few subjects are available and individual differences are large

Question 2

One sample has n = 4 scores and M = 10. A second sample has n = 6 scores and M = 5. If the two samples are combined, then what is the weighted mean for the combined sample?
 
  A) 70/4 = 17.5
  B) 70/6 = 11.7
  C) 70/10 = 7.0
  D) 10/5=2.0

Question 3

Compared to an independent-measures design, a repeated-measured study is more likely to find a significant effect because it reduces the contribution of variance due to ____.
 
  A) MD
  B) degrees of freedom
  C) the effect of the treatment
  D) individual differences

Question 4

A population of N = 10 scores has a mean of  = 6. After one score is removed, the mean is found to be M = 5. What is the value of the score that was removed?
 
  A) X = 3
  B) X = 5
  C) X = 10
  D) X = 15