Roger and sulee each decomposed 1.1/6
roger wrote 1/6+1/6+2/6+3/6 sulee wrote 3/6+4/6
who was correct? explain.

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.