The box plot represents this data set.

{17, 40, 80, 82, 86, 90, 99}

what value does the letter a represent on the box plot of the data?

enter your answer in the box.

A represents the extreme minimum value of the set of data points : therefor the answer would be 17

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.