title: Unable to use "count" function in R
body: <p>I am trying to use simply use <code>count</code> on 1 variable using the data frame and $ to call the variable.  I am doing </p>
  
  <pre><code>count(customer_churn$Churn)
  </code></pre>
  
  <p>before installing <code>dplyr</code> I got following:</p>
  
  <blockquote>
    <p>Error in count(customer_churn$Churn) : could not find function "count"</p>
  </blockquote>
  
  <p>After installing <code>dplyr</code> and calling the library I get: </p>
  
  <blockquote>
    <p>Error in UseMethod("summarise_") : 
      no applicable method for 'summarise_' applied to an object of class "c('integer', 'numeric')"</p>
  </blockquote>
  
  <p>I then tried using <code>summarise</code> instead and got the same error. </p>