| Kruskal_Gamma {VUROCS} | R Documentation |
Kruskal's Gamma and its asymptotic standard errors
Description
Computes Kruskal's Gamma on a given cartesian product Y x f(X), where Y consists of the components of y and f(X) consists of the components of fx. Furthermore, the asymptotic standard error as well as the modified asymptotic standard error to test the null hypothesis that the measure is zero are provided as defined in Brown and Benedetti (1977).
Usage
Kruskal_Gamma(y, fx)
Arguments
y |
a vector of realized categories. |
fx |
a vector of predicted values of the ranking function f. |
Value
A list of length three is returned, containing the following components:
val |
Kruskal's Gamma |
ASE |
the asymptotic standard error of Kruskal's Gamma |
ASE0 |
the modified asymptotic error of Kruskal's Gamma under the null hypothesis |
References
Brown, M.B., Benedetti, J.K., 1977. Sampling Behavior of Tests for Correlation in Two-Way Contingency Tables. Journal of the American Statistical Association 72(358), 309-315
Examples
Kruskal_Gamma(rep(1:5,each=3),c(3,3,3,rep(2:5,each=3)))