></span> <span class="modifier_kind"><span class="modifier"></span> <span class="kind">def</span></span> <span class="symbol"><span class="name">smooth</span><span class="params">(<span name="series">series: <span name="scala.Iterable" class="extype">Iterable</span>[<span name="scala.Double" class="extype">Double</span>]</span>, <span name="k">k: <span name="scala.Int" class="extype">Int</span></span>)</span><span class="result">: <span name="scala.Iterable" class="extype">Iterable</span>[<span name="scala.