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<a name="Histogram-Statistics"></a>
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Next: <a href="Histogram-Operations.html#Histogram-Operations" accesskey="n" rel="next">Histogram Operations</a>, Previous: <a href="Searching-histogram-ranges.html#Searching-histogram-ranges" accesskey="p" rel="previous">Searching histogram ranges</a>, Up: <a href="Histograms.html#Histograms" accesskey="u" rel="up">Histograms</a> [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Histogram-Statistics-1"></a>
<h3 class="section">23.6 Histogram Statistics</h3>
<a name="index-histogram-statistics"></a>
<a name="index-statistics_002c-from-histogram"></a>
<a name="index-maximum-value_002c-from-histogram"></a>
<a name="index-minimum-value_002c-from-histogram"></a>
<dl>
<dt><a name="index-gsl_005fhistogram_005fmax_005fval"></a>Function: <em>double</em> <strong>gsl_histogram_max_val</strong> <em>(const gsl_histogram * <var>h</var>)</em></dt>
<dd><p>This function returns the maximum value contained in the histogram bins.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram_005fmax_005fbin"></a>Function: <em>size_t</em> <strong>gsl_histogram_max_bin</strong> <em>(const gsl_histogram * <var>h</var>)</em></dt>
<dd><p>This function returns the index of the bin containing the maximum
value. In the case where several bins contain the same maximum value the
smallest index is returned.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram_005fmin_005fval"></a>Function: <em>double</em> <strong>gsl_histogram_min_val</strong> <em>(const gsl_histogram * <var>h</var>)</em></dt>
<dd><p>This function returns the minimum value contained in the histogram bins.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram_005fmin_005fbin"></a>Function: <em>size_t</em> <strong>gsl_histogram_min_bin</strong> <em>(const gsl_histogram * <var>h</var>)</em></dt>
<dd><p>This function returns the index of the bin containing the minimum
value. In the case where several bins contain the same maximum value the
smallest index is returned.
</p></dd></dl>
<a name="index-mean-value_002c-from-histogram"></a>
<dl>
<dt><a name="index-gsl_005fhistogram_005fmean"></a>Function: <em>double</em> <strong>gsl_histogram_mean</strong> <em>(const gsl_histogram * <var>h</var>)</em></dt>
<dd><p>This function returns the mean of the histogrammed variable, where the
histogram is regarded as a probability distribution. Negative bin values
are ignored for the purposes of this calculation. The accuracy of the
result is limited by the bin width.
</p></dd></dl>
<a name="index-standard-deviation_002c-from-histogram"></a>
<a name="index-variance_002c-from-histogram"></a>
<dl>
<dt><a name="index-gsl_005fhistogram_005fsigma"></a>Function: <em>double</em> <strong>gsl_histogram_sigma</strong> <em>(const gsl_histogram * <var>h</var>)</em></dt>
<dd><p>This function returns the standard deviation of the histogrammed
variable, where the histogram is regarded as a probability
distribution. Negative bin values are ignored for the purposes of this
calculation. The accuracy of the result is limited by the bin width.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fhistogram_005fsum"></a>Function: <em>double</em> <strong>gsl_histogram_sum</strong> <em>(const gsl_histogram * <var>h</var>)</em></dt>
<dd><p>This function returns the sum of all bin values. Negative bin values
are included in the sum.
</p></dd></dl>
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