The nth root of the product of the n observations is the

A) weighted mean.
B) geometric mean.
C) product deviation.
D) product variance.

Geometric Mean

A type of mean or average, which indicates the central tendency of a set of numbers by using the product of their values (as opposed to the arithmetic mean which uses their sum).

Weighted Mean

The mean of a data set that accounts for the importance or weight of each value.