title: BoxPlot on R program with specific data
body: <p>Being new to R, I have some problems in mind. Can you guys help me with it? </p>
  
  <p>I have a series of data </p>
  
  <pre><code>X     Gender     Score         Postal
  1       F       427.395        123455
  2       F       922.080        642362
  3       M       114.500        123947 
  4       M       176.345        236835
  5       F       523.140        849729
  </code></pre>
  
  <p>Above is a sample of 500 data. </p>
  
  <p>I wish to do a boxplot on scores for females and males separately and also. However, there's the postal code which will be captured in the boxplot as well. How do I make the conditions for boxplot to capture data from only X and Score, classified by gender?</p>
  
  <p>I have tried to do sorting first before plotting boxplot, but can't seem to make it work. Do you guys have any ideas on this? </p>
  
  <p>Thanks in advance! </p>