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Module « scipy.stats.mstats »

Fonction ttest_1samp - module scipy.stats.mstats

Signature de la fonction ttest_1samp

def ttest_1samp(a, popmean, axis=0, alternative='two-sided') 

Description

help(scipy.stats.mstats.ttest_1samp)

Calculates the T-test for the mean of ONE group of scores.

Parameters
----------
a : array_like
    sample observation
popmean : float or array_like
    expected value in null hypothesis, if array_like than it must have the
    same shape as `a` excluding the axis dimension
axis : int or None, optional
    Axis along which to compute test. If None, compute over the whole
    array `a`.
alternative : {'two-sided', 'less', 'greater'}, optional
    Defines the alternative hypothesis.
    The following options are available (default is 'two-sided'):

    * 'two-sided': the mean of the underlying distribution of the sample
      is different than the given population mean (`popmean`)
    * 'less': the mean of the underlying distribution of the sample is
      less than the given population mean (`popmean`)
    * 'greater': the mean of the underlying distribution of the sample is
      greater than the given population mean (`popmean`)

    .. versionadded:: 1.7.0

Returns
-------
statistic : float or array
    t-statistic
pvalue : float or array
    The p-value

Notes
-----
For more details on `ttest_1samp`, see `scipy.stats.ttest_1samp`.

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