The price of a stock steadily decreased by a total of $127 over 15 months. Which expression shows the change in the stock's value per month? a. -$127 -15 months b. $127 15 months c. -$127 15 months d. $15 127 months

Yes you are right the correct answer is 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.