Author Question: The estimated population variance is defined as the sum of the _____ . a. squared differences of ... (Read 102 times)

strangeaffliction · **on:** Jun 20, 2018

The estimated population variance is defined as the sum of the _____ .

a. squared differences of each score from the mean of a distribution divided by the
sample size
b. differences of each score from the mean of a distribution divided by the sample
size
c. squared differences of each score from the mean of a distribution divided by the
sample size minus one
d. differences of each score from the mean of a distribution divided by the sample
size minus one

Question 2

When an observed difference between two groups on the dependent variable is attributed to the effect of the independent variable through statistical hypothesis testing, then we know that ______ .

a. it is unlikely that the difference would occur by chance alone
b. the raw data have been refined
c. the groups were not equivalent before the independent variable was introduced
d. it is likely that the difference would occur by chance alone