theta_bayes: Bayesian inference for theta for one Merkmal

In iqtigorg/iqtigprm: Illustration of the IQTIG analysis methodology for patient related measures

Description

This is a helper function for the Bayesian QI computation function. The function computes the parameters of the Beta posterior for the underlying merkmals parameter theta as well as a credibility interval for theta.

Usage

theta_bayes(y, nClass, a, b, conf_level)

Arguments

y	Observed input of all Items of the Merkmal with points
nClass	Number of Item categories (supposed do be the same for each Item)
a	Prior shape parameter of Beta distribution
b	Prior scale parameter of Beta distribution
conf_level	Confidence level of the resulting uncertainty interval.

Value

A list containing the prior and posterior parameters of the Beta distribution, the corresponding posterior mean value for theta and a credibility interval.

iqtigorg/iqtigprm documentation built on Dec. 20, 2021, 7:58 p.m.