What are Norm Groups?

Article author
Rachel Scriven
  • Updated

A ‘Norm Group’ (or normative group) refers to a sample that are representative of the population, allowing you to compare individuals to each other reliably.

 

Why use Norm Groups?

When designing a measure of anything – be it academic ability or blood pressure —it's important for the people making the test to understand the group that they are testing and identify what is considered typical within that group.

 

For example, a valid comparison group for school exams will be a cross-cultural group of students who accurately reflect the age and diversity of that group taking the test. This is what allows for an individual score to be meaningfully compared and understood.

 

In contrast to tests that measure only criteria or knowledge, it's not possible to "pass" or "fail" measures that are relative to a norm group.

 

Facet5 scores are ‘standardised’ Sten scores which mean the factor and subfactor scores a person gets depends not only on the raw score (the answers they gave in the questionnaire) but also the scores of the people who they are being compared against.

 

You can find further information on our Norm Groups used here

 

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