brxx_general {brxx}

brxx_general: Bayesian Estimation of Reliability from Variance Estimates

Description

This function estimates reliability from given true and error variance estimates.

Usage

brxx_general(a, b, alpha, beta, CI, items)

Arguments

a

True score variance estimate.

b

Error variance estimate.

alpha

Prior true score variance.

beta

Prior error variance.

CI

Credible interval quantile, as a decimal (ie, for 95 percent, 0.95).

items

Number of test items.

Value

Returns estimated median and quantile based credible limits for reliability.

Examples

a=18.7
b=3.3
alpha=3.51
beta=1.75
brxx_general(a=a,b=b,alpha=alpha,beta=beta,CI=0.95,items=10)