| ci.agree {statpsych} | R Documentation |
Confidence interval for a G-index of agreement
Description
Computes an adjusted Wald confidence interval for a G-index of agreement between two polychotomous ratings. This function requires the number of objects that were given the same rating by both raters. The G-index corrects for chance agreement.
Usage
ci.agree(alpha, n, f, k)
Arguments
alpha |
alpha level for 1-alpha confidence |
n |
sample size |
f |
number of objects rated in agreement |
k |
number of rating categories |
Value
Returns a 1-row matrix. The columns are:
Estimate - maximum likelihood estimate of G-index
SE - standard error
LL - lower limit of the adjusted Wald confidence interval
UL - upper limit of the adjusted Wald confidence interval
References
Bonett DG (2022). “Statistical inference for G-indices of agreement.” Journal of Educational and Behavioral Statistics, 47(4), 438–458. doi:10.3102/10769986221088561.
Examples
ci.agree(.05, 100, 80, 4)
# Should return:
# Estimate SE LL UL
# 0.7333333 0.05333333 0.6132949 0.8226025