title: How do I filter male and female separately in my data set (using r)?
body: <p>I have an excel sheet in .csv loaded into r. I want to filter my data by male vs female but when I try I can't figure it out. My column titles are Male/Female and Size (mm), so my data lists either an M or and F and a number.</p>
  
  <p>I've tried saying </p>
  
  <pre><code>Male &lt;- Male/Female %&gt;% filter(M);
  Male &lt;- Male/Female %&gt;% filter(Male/Female &lt;= M)
  </code></pre>
  
  <p>etc. I'm not sure what I'm doing incorrectly.</p>
  
  <p><a href="https://i.stack.imgur.com/Xlqqw.png" rel="nofollow noreferrer">Screenshot of what my current error messages look like, along with what I have so far</a></p>
  
  <p><a href="https://i.stack.imgur.com/cL078.png" rel="nofollow noreferrer">Screenshot of the majority of the data table that I'm trying to work with and filter</a></p>