pan class="special">::</span><span class="identifier">average</span><span class="special">&lt;</span> <span class="identifier">Sample</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span> <a name="boost.accumulators.impl.p_square_quantile_impl.float_type"></a><span class="identifier">float_type</span><span class="s