This is documentation for an old release of SciPy (version 0.7.). Read this page in the documentation of the latest stable release (version 1.15.1).
Perform Bartlett test with the null hypothesis that all input samples have equal variances.
Inputs are sample vectors: bartlett(x,y,z,...)
Outputs: (T, pval)
T – the Test statistic pval – significance level if null is rejected with this value of T
(prob. that null is true but rejected with this p-value.)
Sensitive to departures from normality. The Levene test is an alternative that is less sensitive to departures from normality.
References:
http://www.itl.nist.gov/div898/handbook/eda/section3/eda357.htm
- Snedecor, George W. and Cochran, William G. (1989), Statistical
- Methods, Eighth Edition, Iowa State University Press.