The FAA is seeking public comments on proposed guidance that would define sample sizes for parts manufacturer approval (PMA) applicants seeking certification for engine and auxiliary power unit (APU) ...

When auditing a company, auditors use a combination of professional judgment and statistical sampling methods to estimate account balances. Statistical sampling is an efficient way to design samples, ...

Learn the steps and see examples of simple random sampling, which ensures each member of a population has an equal chance of selection for unbiased research results.

Stratified mean-per-unit sampling is a key tool used by auditors. The popularity of this statistical procedure arises from its unique ability to produce trustworthy ...