What is the area of the shaded region? use 3.14 for pi and round your answer to the nearest tenth.
78.5 cm^2
50.2cm^2
12.6 cm ^2
201.0 cm^2

The answer is 50.2^2. You find the area of the outer circle and the middle circle. Then subtract the area of the smaller one from the larger one.

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.