Audit sampling techniques may permit errors or dishonesty to go undetected. Audit sampling occurs when a review of less than 100% of a population occurs. Determining how the size of a population is used in an audit sample is a function of “sampling risk”, which is defined as the probability that a sample will not accurately represent an entire population. It means that an auditor might reach conclusions based on a sample size that would be different from conclusions drawn from an entire population.