10 and 11 extra points will be added

10. Yes because the witch weighs 3,200 ounces and she can hold 4,000 ounces

11. The price of a candy bar is $1

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.