Astore item is originally priced at $80. the item goes on sale at a 25% discount. two weeks later that sales price is marked down an additional 10%. what is the current price of the item?

80 - (80 x .25) = $60
60 - (60 x .10) = $54

Answer is $54 dollars

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.