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statsmodels.stats.weightstats.DescrStatsW.ttest_mean

DescrStatsW.ttest_mean(value=0, alternative='two-sided')[source]

ttest of Null hypothesis that mean is equal to value.

The alternative hypothesis H1 is defined by the following ‘two-sided’: H1: mean not equal to value ‘larger’ : H1: mean larger than value ‘smaller’ : H1: mean smaller than value

Parameters:

value : float or array

the hypothesized value for the mean

alternative : string

The alternative hypothesis, H1, has to be one of the following

‘two-sided’: H1: mean not equal to value (default) ‘larger’ : H1: mean larger than value ‘smaller’ : H1: mean smaller than value

Returns:

tstat : float

test statisic

pvalue : float

pvalue of the t-test

df : int or float

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