Test for Homogeneity of Variances
Usage
is_var.equal(y, x, alpha = 0.05, test = "levene", center = stats::median)Arguments
- y
Numeric vector (response).
- x
Grouping factor.
- alpha
Threshold for null hipotesis (of normality) rejection. Defaults to 0.05
- test
A character indicating whether to use Levene's test ("levene", the default) or Fligner's test ("fligner"). The first letter will be used.
- center
A function to compute the center of each group (valid only for Levene's Test). The mean gives the original Levene's test; the default, median, provides a more robust test.