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What is the Arithmetic Mean of the following data 3,6,9,12,15?

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The arithmetic mean of the data 3, 6, 9, 12, 15 is calculated by adding all the numbers together and then dividing by the total count of numbers.

Arithmetic Mean = (3 + 6 + 9 + 12 + 15) / 5 Arithmetic Mean = 45 / 5 Arithmetic Mean = 9

Therefore, the arithmetic mean of the data 3, 6, 9, 12, 15 is 9.
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