Which of the following is a measure of the variability of ratings in a selection...

Standard deviation measures the amount of variability or dispersion in a set of scores or ratings. In selection assessments, it helps determine how spread out the ratings are and identifies consistency issues.

Official Extract:

"Standard deviation measures the spread of data points from the mean, providing insight into the consistency of selection ratings and assessment scores."

(Source: HRCI PHR Content Outline 2024–2025, Talent Planning and Acquisition Section, Selection Metrics)