rage reaction time (ms)"</span>, aspect <span class="op">=</span> <span class="st">"xy"</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="sleepstudy-1.png" alt="" width="700" height="433"></span>
<span class="r-in"><span><span class="op">(</span><span class="va">fm1</span> <span class="op">&lt;-</span> <span class="fu"><a href="lmer.html">lmer</a></span><span class="op">(</span><span class="va">Reaction</span> <span class="op">~</span> <span class="va">Days</span> <span class="