Often we use frequency histograms to visualize the values in a frequency table since it’s typically easier to gain an understanding of data when we can visualize the numbers.Ī histogram lists the classes along the x-axis of a graph and uses bars to represent the frequency of each class along the y-axis. In one column we have the “class” and in the other column we have the frequency of the class. This type of table is known as a frequency table. Frequencies simply tell us how many times a certain event has occurred.įor example, the following table shows how many items a particular shop sold in a week based on the price of the item: Item Price Often in statistics you will encounter tables that display information about frequencies.
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