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# Histograms

A histogram is a type of bar graph that represents the frequency of data that has been grouped in several intervals.

Read the histogram and answer the following questions:

1. How many workers are in the maximum salary group? 5 workers.
2. In which salary group are the maximum workers? 930-940.
3. What is the size of each class? 10.
4. How many workers get less than $930? 55 workers. 5. How many get$930 or more? 70 workers.
6. What is the total number of workers? 125 workers.

Given here is the histogram depicting the daily earnings of some chemists.

What is the interval of maximum earnings?

0 - 20
20 - 40
40 - 60
60 - 80
80 - 100