title: R filter down data to >0.25 or <0.25
body: <p>So I have this matrix, hail_outbreaks , that has a column that tells you hail reports (it is column 3). Now I am having a hard time answering this question. The question says determine the number of hail reports and the IQR for events that are above the ranking of 0.25 &quot;major events&quot; and those below 0.25 &quot;non-major events&quot;. It says that you assume this threshold is a ranking index of 0.25. I am getting confused on how to find the rows in the column that are &gt; 0.25 and &lt; 0.25. I was told to use a <code>which()</code> statement or to use a loop to filter down the data.</p>