Stratified Mean Per Unit (MPU) Sampling Is a Statistical Technique

Multiple Choice

Stratified mean per unit (MPU) sampling is a statistical technique that may be more efficient than unstratified MPU because it usually:

A) May be applied to populations where many monetary errors are expected to occur.
B) Produces an estimate having a desired level of precision with a smaller sample size.
C) Increases the variability among items in a stratum by grouping sampling units with similar characteristics.
D) Yields a weighted sum of the strata standard deviations that is greater than the standard deviation of the population.