3. HISTOGRAMS: Histograms are used when information is presented in continuous groups. These are similar to bar graphs BUT THERE ARE NO SPACES BETWEEN THE BARS. Remember: bars are always the same size (width) - measure and draw with a ruler draw bars against the y-axis ● scale must be clearly marked and the number written next to the mark ● it is strongly advised that a key be used. eg. A, B, C or 1, 2, 3. Do not write in the bars. ● ● ● 3.1. Translate the following information showing the rainfall (mm) per month for Tshwane in 2004 into a histogram. Month of the year Rainfall (mm) January February March April May June July August September October November December 200 350 210 100 50 10 0 0 10 150 200 280 N.​