Histogram

Source: http://quarknet.fnal.gov/toolkits/ati/histograms.html

Histograms are bar graphs that show frequency distributions. This graph above is from this set of numbers: 1,2,2,3,3,3,3,4,4,5,6. The x-axis which is the 'number in set' is numbered 0-6. The y-axis is the 'times appearing', which is numbered 0-5. This is a simple representation of a histogram, because it records the frequency of numbers appearing in a number sequence. Judging by the graph, the number 3 appears 4 time, while the number 1, 5, and 6 only appear 1 time. The numbers 2 and 4 appear 2 times.