Histogram- a bar chart representing a frequency distribution. A histogram is different from a bar graph because in a histogram the bars must all touch each other so that the measured data measurements on the x-axis are continuous.
This is a (made up) histogram of the salaries of employees of a big-box chain. The chart starts at the lowest salaries and moves in even increments of $10,000 up to $200,000, above which everything is grouped together. It shows that the largest group of employees is getting paid the lowest salary, the managers (presumably of individual stores within the chain) are getting paid an average salary and there are far less of them than of the lowest employees, and the top executives, who are the smallest group, are getting paid the most. It is a histogram because the frequencies are represented with bars and the x-axis variable moves evenly upwards. Even though this chart is made up, in my opinion it is a fairly accurate representation of the compensation methods of a company like this.
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