Category
page 1Comparison of assessments
reliability
consistency of a measure in psychometrics and statistics, that is if it produces similar results under consistent conditions
Cronbach's alpha
statistical measure of reliability
item response theory
paradigm for the design, analysis, and scoring of tests
Classical test theory
Theory in psychometrics
inter-rater reliability
measure of consensus in ratings given by multiple observers

internal consistency
absence of self-contradictions
Stanine
Stanine (STAndard NINE) is a method of scaling test scores on a nine-point standard scale with a mean of five and a standard deviation of two.

Spearman–Brown prediction formula
formula relating psychometric reliability
Kuder–Richardson Formula 20
Measures in psychometrics