Sampling

Question 1

In attribute sampling a 25% change in which of the following factors will have the smallest effect on the size of the sample?

A. Tolerable rate of deviation.

B. Number of items in the population.

C. Degree of assurance desired.

D. Planned assessed level of control risk.

Answer 1

Tolerable rate of deviation.
Number of items in the population.
Degree of assurance desired.
Planned assessed level of control risk.

Population size is not considered in determining the sample size for an attributes sampling application. The tables that are used to determine the sample size for attributes sampling are based upon an assumption that the population is very, very large. Hence, an increase in the population size would have a negligible effect.