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Maths Exercices

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.

The following histogram is based on data from a Gallup pop survey of some people who purchased lottery tickets.



How many people purchased between 30 and 40 tickets per month?


Solution: people