How do I make a histogram?

To make a histogram, first take the full range encompassing your data values and divide the range into intervals; you can choose the best interval size for your data. Histograms are often generated with equal intervals, but it is also viable to use intervals of different sizes.

Then, plot each data point according to the interval that it falls in. The area of a bar in a histogram will represent the frequency that your data occurs within that interval.