Giving away 50 !me finish this, i am on a time limit to get this

1. 180 miles in 4 hours
180÷4=45 miles an hour
For the train to travel in 7 hrs
45*7=315
2. =3/4
3. B. II & III

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.