Alexa needs 20.5 pints of blueberries to make jam. She picked 7.75 pints on Friday and 4.25 pints of Saturday. How many more pints does she need to pick?

The answer would be choice b

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.