Author Question: Because random assignment is likely to create groups of different sizes, researchers often employ ... (Read 82 times)

geodog55 · **on:** Jun 19, 2018

Because random assignment is likely to create groups of different sizes, researchers often employ ____.

a. restricted random assignment
b. matched random assignment
c. simple random assignment
d. sampling

Question 2

If you could see all random error in a distribution, it would ____.

a. have a variance equal to the mean
b. sum to zero
c. shift the mean in a positive direction
d. be greater than the population variance