Rachel is going on a 2 mile walk. She has already walked 1 3/4 miles. How much further does she have to go to finish her walk?

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.

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