[SciPy-User] comparing statistical test in scipy.stats and R.stats, what do we have?

Travis Oliphant oliphant@enthought....
Wed Dec 8 17:13:30 CST 2010


It would be great to get these into scipy stats -- particularly the ones you are interested in :-)

Travis

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Travis Oliphant
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On Dec 8, 2010, at 8:33 AM, josef.pktd@gmail.com wrote:

> I'm looking a bit at the status of "Statistics in Python", or "what do
> they have, and we don't".
> 
> Here are raw tables of content of R.stats and scipy.stats for
> statistical tests. Some additional ones are in scikits.statsmodels,
> but several are missing. (It doesn't contain the latest additions to
> scipy.stats like fisherexact)
> 
> Is anyone interested in adding some missing ones? (BSD compatible and
> hopefully verified or verifiable so that they don't have to linger for
> a year or two in the ticket queue)
> 
> I will keep adding the ones I'm interested in to scikits.statsmodels.
> 
> Josef
> 
> from the scraped table of content of R library(stats)  functions with
> "test" in name
> 
>>>> pprint([item for item in statstoc if 'test' in item[0].lower()])
> [['ansari.test', 'Ansari-Bradley Test '],
> ['bartlett.test', 'Bartlett Test of Homogeneity of Variances '],
> ['binom.test', 'Exact Binomial Test '],
> ['Box.test', 'Box-Pierce and Ljung-Box Tests '],
> ['chisq.test', "Pearson's Chi-squared Test for Count Data "],
> ['cor.test', 'Test for Association/Correlation Between Paired Samples '],
> ['fisher.test', "Fisher's Exact Test for Count Data "],
> ['fligner.test', 'Fligner-Killeen Test of Homogeneity of Variances '],
> ['friedman.test', 'Friedman Rank Sum Test '],
> ['kruskal.test', 'Kruskal-Wallis Rank Sum Test '],
> ['ks.test', 'Kolmogorov-Smirnov Tests '],
> ['mantelhaen.test',
>  'Cochran-Mantel-Haenszel Chi-Squared Test for Count Data '],
> ['mauchly.test', "Mauchly's Test of Sphericity "],
> ['mcnemar.test', "McNemar's Chi-squared Test for Count Data "],
> ['mood.test', 'Mood Two-Sample Test of Scale '],
> ['oneway.test', 'Test for Equal Means in a One-Way Layout '],
> ['pairwise.prop.test', 'Pairwise comparisons for proportions '],
> ['pairwise.t.test', 'Pairwise t tests '],
> ['pairwise.wilcox.test', 'Pairwise Wilcoxon rank sum tests '],
> ['poisson.test', 'Exact Poisson tests '],
> ['power.anova.test',
>  'Power calculations for balanced one-way analysis of variance tests '],
> ['power.prop.test', 'Power calculations two sample test for proportions '],
> ['power.t.test', 'Power calculations for one and two sample t tests '],
> ['PP.test', 'Phillips-Perron Test for Unit Roots '],
> ['print.power.htest', 'Print method for power calculation object '],
> ['prop.test', 'Test of Equal or Given Proportions '],
> ['prop.trend.test', 'Test for trend in proportions '],
> ['quade.test', 'Quade Test '],
> ['shapiro.test', 'Shapiro-Wilk Normality Test '],
> ['t.test', "Student's t-Test "],
> ['var.test', 'F Test to Compare Two Variances '],
> ['wilcox.test', 'Wilcoxon Rank Sum and Signed Rank Tests ']]
> 
> 
> in scipy.stats objects with "test" in docs
> 
>>>> [item for item in dir(stats) if (getattr(stats, item).__doc__ and 'test' in getattr(stats, item).__doc__)]
> ['Tester', 'anderson', 'ansari', 'bartlett', 'binom_test',
> 'chisquare', 'f_oneway', 'fligner', 'friedmanchisquare', 'glm',
> 'kendalltau', 'kruskal', 'ks_2samp', 'ksone', 'ksprob', 'kstest',
> 'kstwobign', 'kurtosis', 'kurtosistest', 'levene', 'linregress',
> 'mannwhitneyu', 'mood', 'normaltest', 'obrientransform', 'oneway',
> 'pearsonr', 'percentileofscore', 'ranksums', 'rv_discrete', 'shapiro',
> 'skew', 'skewtest', 'spearmanr', 'statlib', 'stats', 'test',
> 'tiecorrect', 'ttest_1samp', 'ttest_ind', 'ttest_rel', 'wilcoxon']
> 
> 
> Josef
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