eom_origin-2.png" alt="" width="700" height="433"></span>
<span class="r-in"><span><span class="co"># scale group mean differences uniformly</span></span></span>
<span class="r-in"><span><span class="va">iris_ctr</span> <span class="op"><a href="https://magrittr.tidyverse.org/reference/pipe.html" class="external-link">%&gt;%</a></span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="https://rdrr.io/r/base/subset.html" class="external-link">subset</a></span><span class="op">(</span>select 