CohenKappa: Calculate Cohen's Kappa.

In NeuroStat/NeuRRoStat: A rare collection of R functions used at the NeuroStat lab (Ghent University)

Description

Function to calculate a coherence incex called Cohen's κ which gives an estimate of the amount of agreement between different raters. Or the agreement on realizations of observations from a mixture of two binomial distributions.

Usage

CohenKappa(lambda, piA1, piI1)

Arguments

lambda	the proportion of truly activated voxels
piI1	the probability that a truly inactive voxel is declared active
piAI	the probability that a truly active voxel is declared active

Details

This function is used to estimate the agreement of replication images in fMRI data. Therefore, we denote the parameters that are obtained and described in EMbinom.

Value

Numeric with the index of coherence (κ).

NeuroStat/NeuRRoStat documentation built on May 15, 2019, 1:26 p.m.