What is a distribution of scores that gives information about performance compared to a norm group?

A distribution of scores that provides information about performance compared to a norm group is referred to as a norm. This type of distribution allows educators and researchers to understand how an individual or group’s scores compare to those of a larger reference group, often represented through various statistical measures.

Norms are essential in educational settings because they help in interpreting test scores and understanding where a student stands relative to peers. This comparative perspective is crucial for making informed decisions regarding instruction, support services, and interventions. By using norms, educators can assess whether a student is performing at, above, or below expected levels, thereby enabling tailored educational strategies to better meet the student's needs.

The other options refer to different concepts. The range pertains to the difference between the highest and lowest scores in a data set, offering no comparative information about performance relative to a group. The average, or mean, is a measure of central tendency that summarizes a set of scores but does not provide comparative insights. The term standard may refer to standard deviations or benchmarks in various contexts but does not specifically relate to the idea of a norm group against which scores are evaluated.