Description Usage Arguments Value Author(s) References See Also Examples
This function extends leveneTest
to a multivariate
response setting. It performs the Levene test of homogeneity of
variances for each of a set of response variables, and prints a
compact summary.
1 | leveneTests(y, group, center = median, ...)
|
y |
A data frame or matrix of numeric response variables in a multivariate linear model. |
group |
a vector or factor object giving the group for the corresponding elements of the rows of |
center |
The name of a function to compute the center of each group; |
... |
other arguments, passed to |
An object of classes "anova" and "data.frame", with one observation for each
response variable in y
.
Michael Friendly
Levene, H. (1960). Robust Tests for Equality of Variances. In Olkin, I. etal. (Eds.), Contributions to Probability and Statistics: Essays in Honor of Harold Hotelling, Stanford University Press, 278-292.
Brown, M. B. & Forsythe, A. B. (1974). Robust Tests For Equality Of Variances Journal of the American Statistical Association, 69, 364-367.
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