 actually zero for degrees
          of freedom from 2 down to 0, and provide an extended definition that would
          avoid a discontinuity in the mode as alternative code in a comment).
        </p>
<p>
          The domain of the random variable is [0, +&#8734;].
        </p>
<h5>
<a name="math_toolkit.dist_ref.dists.chi_squared_dist.h2"></a>
          <span class="phrase"><a name="math_toolkit.dist_ref.dists.chi_squared_dist.examples"></a></span><a class="link" href="chi_squared_dist.html#math_toolki