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<title>sd (RFuzz::Sampler)</title>
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<pre> <span class="ruby-comment cmt"># File lib/rfuzz/stats.rb, line 79</span>
79: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">sd</span>
80: <span class="ruby-comment cmt"># (sqrt( ((s).sumsq - ( (s).sum * (s).sum / (s).n)) / ((s).n-1) ))</span>
81: <span class="ruby-keyword kw">begin</span>
82: <span class="ruby-keyword kw">return</span> <span class="ruby-constant">Math</span>.<span class="ruby-identifier">sqrt</span>( (<span class="ruby-ivar">@sumsq</span> <span class="ruby-operator">-</span> ( <span class="ruby-ivar">@sum</span> <span class="ruby-operator">*</span> <span class="ruby-ivar">@sum</span> <span class="ruby-operator">/</span> <span class="ruby-ivar">@n</span>)) <span class="ruby-operator">/</span> (<span class="ruby-ivar">@n</span><span class="ruby-operator">-</span><span class="ruby-value">1</span>) )
83: <span class="ruby-keyword kw">rescue</span> <span class="ruby-constant">Errno</span><span class="ruby-operator">::</span><span class="ruby-constant">EDOM</span>
84: <span class="ruby-keyword kw">return</span> <span class="ruby-value">0</span><span class="ruby-value">.0</span>
85: <span class="ruby-keyword kw">end</span>
86: <span class="ruby-keyword kw">end</span></pre>
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