title: ttest on multiple boxplots in R
body: <p>I have a facet plot with 40 boxplot in it. I want to calculate a p-value (adjusted) for the boxplot being different from zero for every boxplot in the graph. So basically a simple ttest. 
  Is there a way do do this for the whole dataset?</p>
  
  <p>Data example:</p>
  
  <pre><code>   Pos    Pair Fold_Change
      1     Yes     0.36170477
      1     Yes     0.63926759
      1     No     -0.26791834
      1     No      0.06245854
      2     Yes     0.95403940
      2     Yes     0.45182453
      2     No      0.95403940
      2     No      0.45182453
      ....
  
  ggplot(Pairing,aes(Pairing,Fold_Change,fill=Pairing)) + geom_boxplot() + facet_grid(~Position)
  </code></pre>