Write the following using algebraic notation, using the letter x for any unknown numbers: I think of a number, multiply it by two, then subtract nine

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.