Rewrite the radical expression as an exponential expression, and then simplify.
V121 = {(121) = 60.5
• 1121 = 1212= 14,641
/191=1213= 11
/171 =1213 = 60.5

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.