title: T.test in R...getting multiple p values
body: <p>I'm trying to do a T.test between two data sets..</p>
  
  <p>This is 'Dataset1'</p>
  
  <pre><code>TIME        5    10      15      20      25
  Specimen no.                        
  1          15.2 30.5     41     12.5         16.2
  2          13.1 16.2    12.5    Na       13.2
  3          16.11 45.7   11.4    18.9    11.7
  4          11.2  Na    9.11    20.7      19
  </code></pre>
  
  <p>And another 'Dataset2'</p>
  
  <pre><code>TIME        5   10        15      20    25
  
  Specimen no.                        
  1       11.8    34.8    14.2    19.9    23.4
  2         NA    6.4     29.2    32.7    17.1
  3       10.0    35.5    38.5    28.3    27.3
  4       18.7    NA      11.5    14.6    18.9
  </code></pre>
  
  <p>I just want to compare each 5 second interval from dataset1 to dataset2 using a t.test.  How do I get that list of p values</p>
  
  <p>So far I only have this</p>
  
  <pre><code>t.test(dataset1[[2]],dataset2[[2]])$p.value...
  </code></pre>
  
  <p>Clearly this is wrong....coz I don't know how I can access certain columns from dataset1 and dataset2 ...I also have NA values that could get me error messages</p>