title: How to retrieve the most repeated value in a column present in a data frame
body: <p>I am trying to retrieve the most repeated value in a particular column present in a data frame.Here is my sample data and code below.A</p>
  
  <pre><code>data("Forbes2000", package = "HSAUR")
  head(Forbes2000)
  
  
    rank                name        country             category  sales profits  assets marketvalue
  1    1           Citigroup  United States              Banking  94.71   17.85 1264.03      255.30
  2    2    General Electric  United States        Conglomerates 134.19   15.59  626.93      328.54
  3    3 American Intl Group  United States            Insurance  76.66    6.46  647.66      194.87
  4    4          ExxonMobil  United States Oil &amp; gas operations 222.88   20.96  166.99      277.02
  5    5                  BP United Kingdom Oil &amp; gas operations 232.57   10.27  177.57      173.54
  6    6     Bank of America  United States              Banking  49.01   10.81  736.45      117.55
  </code></pre>
  
  <p>As per my sample data I need to return the most repeated category which is Insurance.</p>
  
  <pre><code>subset(subset(Forbes2000,country=="Bermuda")
  </code></pre>