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Mathematics, 28.02.2020 06:07 brodycruce

The mean of a data set of 3 numbers is 12. The mean of a data set of 9 numbers is 40. What is the mean of the combined data sets?

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The mean of a data set of 3 numbers is 12. The mean of a data set of 9 numbers is 40. What is the me...

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