What a raw score is
A raw score may count correct responses, points earned, or performance within a time limit. On its own, it usually says little because task difficulty and age expectations are not represented.
Two subtests with the same raw total may have different meanings, and the same raw total can convert differently across age groups.
How scaling works
Test publishers collect norm data and convert raw performance to standardized subtest scores. Selected subtests may then combine into index and overall composites.
Percentile ranks describe relative standing, while confidence intervals express uncertainty around the estimate. Conversion rules are specific to each instrument and edition.
Why scores cannot be freely converted
An online percentage correct is not automatically an IQ score. A conversion requires appropriate items, standard administration, representative norms, and evidence that the scale behaves as claimed.
Do not compare numbers from different tests without checking their scales. Mensa emphasizes percentiles because qualifying tests may report results differently.
Common questions
Frequently asked questions
Is 80 percent correct equal to an IQ of 120?
No. The conversion depends on item difficulty, norms, age, and the test’s scoring model.
What is a scaled score?
It is a transformed result placed on a defined scale so performance can be interpreted against the test’s norms.
References