In this module, you will be introduced to the concept of sampling. We will cover non-statistical and statistical sampling, but we will emphasize a form of statistical sampling called attribute sampling. You will learn about sampling risk as well as about three important determinants of sample size: risk of incorrect acceptance, tolerable error, and expected error. You will learn that population size actually has a small effect on sample size, contrary to lay theories the position population size as one of the most important determinants of needed sample sizes. You will also learn about key steps involved in planning and performing attribute sampling, the critical role of professional judgement during many of these steps, and you will learn about some specific audit procedures for verifying management’s assertions related to their controls.