Check all that apply. Distribute 9, by multiplication, to the variable, a, and to the constant, 8. Write the two multiplications, 9(a) + 9(8) The expression 9(a) is written as 9a. The expression 9(8) equals 72. The equivalent expression is 9a + 8. The equivalent expression is 9a + 72.

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.