        Rayleigh distribution skewness
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                rayleigh_kurtosis_excess
              </p>
            </td>
<td>
              <p>
                -(6π<sup>2</sup>-24π+16)/(4-π)<sup>2</sup>
              </p>
            </td>
<td>
              <p>
                0.245089
              </p>
            </td>
<td>
              <p>
                <a href="http://en.wikipedia.org/wiki/Rayleigh_distribution" target="_top">Ray