A formula for 8 bottles of window cleaner calls for 6 cups of rubbing alcohol, 2 and one-fourth gallons of water, and 1 and one-half cups of ammonia. How many quarts of rubbing alcohol would the formula call for if a factory made 1,280 bottles for stores to sell to customers?

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.