What is a frequency diagram? Bar charts. Bar charts represent data using rectangular bars that are the same width. They can be used for categorical Vertical line charts. Vertical line charts
1, 2, 3, 2, 4, 5, 6, 2, 2, 1. Hence, frequency of the number 2 is 4. Similarly, the number 1 has occurred 2 times, the numbers 3, 4, 5 and 6 all have just occurred 1 time as shown below. 1, 2
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