title: k-means return value in R
body: <p>I am using the kmeans() function in R and I was curious what is the difference between the <em>totss</em> and <em>tot.withinss</em> attributes of the returned object. From the documentation they seem to be returning the same thing, but applied on my dataset the value of totss is 66213.63 and for tot.withinss is 6893.50.
  Please let me know if you are familiar with mroe details.
  Thank you!</p>
  
  <p>Marius.</p>