What does the Sample Size Formula determine?

• A. Sets the submission deadline for moderation samples
• B. Confirms authenticity and control of assessment evidence
• C. Determines number of candidates for moderation samples
• D. Reviews assessment evidence for alignment with standards

Answer: (C)

The concept being tested is how many candidates’ work should be included in moderation to give a reliable check on marking. The Sample Size Formula is used to calculate that number, ensuring the moderation sample is representative of the whole cohort. It takes into account the total number of candidates and the level of precision or confidence required by the moderation policy, so you don’t have to review every piece of work to check fairness and consistency. By defining how many scripts or tasks are needed, the formula balances accuracy with practicality.

The other tasks in moderation—setting deadlines, verifying authenticity and control of evidence, or reviewing evidence for alignment with standards—are separate steps in the process. The sample size formula specifically guides how large the moderation sample should be.