Conover's Two-Sample Squared Ranks Test for Equality of Variance (Scripts) Publisher's description
from Benjamin Levy
Performs the nonparametric squared ranks test on quality of variance for two samples
Performs the nonparametric squared ranks test on quality of variance for two samples. Based on Conover (1981), 'Practical Nonparametric Statistics', pp. 239-248.
Uses normal approximation for for m >10 (MATLAB fxn norminv or table if norminv unavailable). Uses normal approximation if ties exist. Uses tabulated critical values from Conover if small samples sizes and no ties.
type I error rate;
alternative hypothesis type (upper, lower, two-sided)
squared ranks test statistic if no ties;
squared ranks test statistic if ties;
decision (1 reject; 0 fail to reject);
Type I error rate;
alternative hypothesis type;
lower side critical value;
upper side critical value.
System Requirements:MATLAB 6.5 (R13)
Program Release Status: New Release
Program Install Support: Install and Uninstall