Need to do ii please (look at attached image)

Hello human

i) 2a-3b

Explanation:

You add up the like terms lol

Gn ❤️✌

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.