Glossary · Reliability, calibration, and statistics
Generalizability coefficientΦ
Generalizability theory's absolute coefficient: the variance attributable to the object of measurement, divided by that variance plus the variance from sources that should not change the interpretation, Φ = σ²_object / (σ²_object + σ²_Δ).
Also called: absolute coefficient
Defined in
Handbook · ValidationReliability and generalizabilitySpecify what may legitimately vary, then measure how much tasks, seeds, judges and environments move the score.Related terms
- Generalizability theory
- A variance-component framework that assigns measurement variance to facets such as task, judge, seed and environment, and their interactions.
Where it comes up
- Notation and formula cardHandbook · Reference