sirt (version 1.14-0)

dif.strata.variance: Stratified DIF Variance

Description

Calculation of stratified DIF variance

Usage

dif.strata.variance(dif, se.dif, itemcluster)

Arguments

dif

Vector of uniform DIF effects

se.dif

Standard error of uniform DIF effects

itemcluster

Vector of item strata

Value

A list with following entries: A list with following entries:

References

Longford, N. T., Holland, P. W., & Thayer, D. T. (1993). Stability of the MH D-DIF statistics across populations. In P. W. Holland & H. Wainer (Eds.). Differential Item Functioning (pp. 171-196). Hillsdale, NJ: Erlbaum.

See Also

See dif.logistic.regression for examples.