title: multiple Density plot using R
body: <p>I am thinking about plotting multiple density plots on a single graph.My situation is this: I have a query result that has three different columns</p>
  
  <pre><code>CustomerID  Group  AvgVisitsperday
  1             grp1        10
  2             grp1        20
  3             grp2        30
  4             grp3        40
  5             grp2        15
  6             grp2         5
  </code></pre>
  
  <p>I have around 50,000 rows of data. I want to plot 3 density plots with three different colors that would represent the 3 distint groups and their average visits on a single graph..I feel that the density plot would be ideal to represent the distribution..Any ideas or thoughts on this, please feel free to comment. I have been able to do one density plot using R but not able to do group wise.. Please help!</p>