able with the same variance,</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="comment">// which is equal to the sum of the variances of the individual</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;  <span class="comment">// f_i&#39;s, which is (modulus)^2/12 + 1/6 for even modulus,</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  <span class="comment">// and is at