<h4>Pre-Submission Checklist</h4>
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<h4>Type Of Change</h4>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" class="task-list-item-checkbox" checked="" disabled=""> Small bug fix (non-breaking change which fixes an issue)</li>
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<h4>Checklist:</h4>
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<h4>Description</h4>
<p>This PR to fix a calculation error on the latency standard deviation</p>
<p>test with random values from 1-30</p>
<pre><code>total[1726000000]value[3] count[2097152] std[8.654594] avg[15.541001] est[14.098082]
total[1727000000]value[2] count[2097152] std[8.654230] avg[15.542887] est[16.070623]
total[1728000000]value[2] count[2097152] std[8.655254] avg[15.546928] est[13.154167]
</code></pre>
<p>test with random values 1-500</p>
<pre><code>total[1056000000]value[373] count[2097152] std[144.397552] avg[249.993790] est[297.913574]
total[1057000000]value[118] count[2097152] std[144.369400] avg[250.121262] est[222.419662]
total[1058000000]value[431] count[2097152] std[144.314056] avg[250.138077] est[295.765625]
</code></pre>
<hr>
<h4>You can view, comment on, or merge this pull request online at:</h4>
<p> <a href='https://github.com/kamailio/kamailio/pull/1236'>https://github.com/kamailio/kamailio/pull/1236</a></p>
<h4>Commit Summary</h4>
<ul>
<li>dispatcher: latency fix stdev calculation</li>
</ul>
<h4>File Changes</h4>
<ul>
<li>
<strong>M</strong>
<a href="https://github.com/kamailio/kamailio/pull/1236/files#diff-0">src/modules/dispatcher/dispatch.c</a>
(29)
</li>
<li>
<strong>M</strong>
<a href="https://github.com/kamailio/kamailio/pull/1236/files#diff-1">src/modules/dispatcher/dispatch.h</a>
(2)
</li>
</ul>
<h4>Patch Links:</h4>
<ul>
<li><a href='https://github.com/kamailio/kamailio/pull/1236.patch'>https://github.com/kamailio/kamailio/pull/1236.patch</a></li>
<li><a href='https://github.com/kamailio/kamailio/pull/1236.diff'>https://github.com/kamailio/kamailio/pull/1236.diff</a></li>
</ul>
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