how do you draw a back to back *histogram*?????

Answer 1

You probably know that a histogram is basically just a bar graph that shows how many things are in different ranges. For a back to back histogram, you're basically just making two separate bar graphs that use the same ranges--one with your first set of data, and the other with your second. Usually you'll put the labels in a line down the center. The bars for one graph will go toward the left and the bars for the other will go toward the right, so the two graphs are "back to back". The point of making something like this is to be able to make a quick visual comparison of the two sets of data.

Answer 2

if you have statistical software, you simply click draw histogram and then click with groups. however if your data is small enough you can do this by hand. just draw the histogram the normal way but side by side.

Answer 3

Is this network tomography of packets? A simple before and after frequency distribution?. You need statistical software , but if simple can be drawn by hand.