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What does a percentile score tell you?

  1. How many questions were answered correctly

  2. What percentage of individuals scored below a certain score

  3. The total number of correct answers

  4. The average score of a specific group

The correct answer is: What percentage of individuals scored below a certain score

A percentile score is a statistical measure that indicates the relative standing of an individual’s score within a group. Specifically, it tells you what percentage of individuals scored below a certain score. For instance, if a student is in the 75th percentile, it means that they scored better than 75% of the individuals who took the same test. This metric is particularly useful in assessments as it provides context regarding an individual's performance in comparison to others, rather than simply reflecting the number of correct answers or performance in isolation. In contrast, other options focus on absolute measures such as the total number of correct answers or the average score, which do not provide insight into relative performance. Consequently, understanding percentile scores helps in evaluating how an individual is performing in relation to a population group.