title: coverting factors into integers or numbers
body: <p>i have a variable that contains numbers as below:</p>
  
  <pre><code>[1] 76.19047619  71.42857143  70.37037037  78.72340426  94.54545455  86.53846154  80.58936579  57.77777778 
  [9] 96.00000000  89.79591837  81.25000000  100.00000000 92.00000000  61.53846154  96.42857143  88.88888889 
  </code></pre>
  
  <p>when i bring this in R, they come as factors instead of numbers with the following message:</p>
  
  <pre><code>1577 Levels: #DIV/0! 0.00000000 0.05122951 0.05288207 0.06146281 0.13917884 0.26200873 0.26666667 ... 97.46376812
  </code></pre>
  
  <p>how can coerce them into numeric, i have tried <code>as.integers</code> and <code>as.numeric</code> but when i use that variable in computation, the results dont change. they are the same as when it is factors.</p>
  
  <p>Thanks,</p>