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CISA · Question #520

In which of the following sampling methodologies does each population subgroup have a probability of being selected?

The correct answer is C. Stratified sampling. In stratified sampling, the population is divided into subgroups (strata) based on specific characteristics, and samples are randomly selected from each subgroup. This ensures that every subgroup has a known probability of being represented in the sample, improving the accuracy…

Submitted by krish.m· Apr 18, 2026Information System Auditing Process

Question

In which of the following sampling methodologies does each population subgroup have a probability of being selected?

Options

  • AStatistical sampling
  • BRandom sampling
  • CStratified sampling
  • DQuota sampling

How the community answered

(31 responses)
  • B
    3% (1)
  • C
    94% (29)
  • D
    3% (1)

Explanation

In stratified sampling, the population is divided into subgroups (strata) based on specific characteristics, and samples are randomly selected from each subgroup. This ensures that every subgroup has a known probability of being represented in the sample, improving the accuracy and representativeness of audit testing.

Topics

#Sampling methods#Stratified sampling#Audit techniques

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