title: How to run ANOVA on a wide format data.frame?
body: <p>I've been taught to run an ANOVA with the formula:
  aov(dependent variable~independent variable, dataset)</p>
  
  <p>but I am struggling with how to run an ANOVA for a particular dataset because it is broken up into three columns that each contain a value. The three columns are designated newborn, adolescent and adult (which is hamster age) and the values within each column represent blood pressure values. I need to run a test to determine if there is a relationship between blood pressure and age.</p>
  
  <p>This is what the data looks like in R:</p>
  
  <pre><code>&gt; hamster
     Newborn adolescent adult
  1      108        110   105
  2      110        105   100
  3       90        100    95
  4       80         90    85
  5      100        102    97
  6      120        110   105
  7      125        105   100
  8      130        115   110
  9      120        100    95
  10     130        120   115
  11     145        130   125
  12     150        125   120
  13     130        135   130
  14     155        130   125
  15     140        120   115
  </code></pre>
  
  <p>Confused because the dependent variable are those values ^ within each column</p>