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

question 204

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.

---

Definitions:

Quota Sampling

A sampling method where the selection of participants is based on pre-specified characteristics or quotas to ensure representation.

Nonprobability Sampling

A sampling technique where the samples are gathered in a process that does not give all the individuals in the population equal chances of being selected.

Simple Random Sampling

A sampling method where each member of a population has an equal chance of being selected, minimizing bias in the sample collected.

Exit Polling

A survey of voters taken immediately after they have exited the polling stations, primarily used to predict election outcomes before the official count.