title: Skewness in Stata
body: <p>I have tried many different combinations of <code>sktest</code> and sadly nothing works.</p>
  <p>I was almost certain that <code>sktest</code> will work with <code>by</code> combination but it doesn't.</p>
  <p>The issue is: I have binary data <code>gender</code> (male 0 and female 1) and I want to measure the skewness of returns for each (male and female) in the variable <code>returns</code>. Can you please advise?</p>
  <p>I was hoping for a result similar to what we get when we run e.g. <code>by gender: summarize returns</code></p>