George is giving two speeches at school. the first was 3.4 minutes long. then he added 0.9 minutes to the speech. the second speech was 4.1 minutes long . then he subtracted 1.4 minutes from it. use the benchmark to estimate the length of each speech

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.