Which of the Following Statements About a Weighted Mean Is

Multiple Choice

Which of the following statements about a weighted mean is true.

A) The weighted mean is always equal to the arithmetic mean.
B) The weight mean can only be reported id the sample size is equal in each group.
C) The weighted mean is used to compute the combined mean for two or more samples of scores in which the number of scores in each sample is disproportionate or unequal.
D) The weighted mean is heavier than an arithmetic mean.