1 · THE SCALE
2 · YOUR SCORE3 · HOW PRECISE WAS THE TEST?
PERCENTILE90.9thHigher than about 90.9% of people taking a test on this scale. About 1 in 11 score this high or higher.Likely range: 84.3rd to 95.2nd percentile (95%, dark band).
Z-SCORE+1.33
IQ (SD 15)120
T-SCORE63
STANINE8
Your expected rank in a group of
≈ #4 of 30Expected value in a random group; about 2.7 would score higher. Real groups are rarely random.COMPARE TWO SCORES
Even across different tests
Percentiles put scores from different scales on common ground. Score A uses the scale above.
A · 120 on 100/1590.9th
Bon SD
97.7thB is higher: 97.7th vs 90.9th. On the modern scale that's 130 vs 120.
Percentile ≠ percent correctThe 90th percentile means you outscored 90% of the norm group, not that you answered 90% of items.
Norms are the whole gameA percentile is only as good as the sample behind it. Unnormed online quizzes produce numbers with no real percentile.
Subtests varyOne scaled score of 13 is the 84th percentile, but single subtests are far less reliable than the composite.