Math, asked by vikasroy108, 12 hours ago

Three distributions each of 100 members and standard deviation 4.5 units are located with means at 12.1, 17.1, 22.1 units respectively. Showing details in the working, determine the standard deviation of the distribution obtained by combining the three.

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Answered by omprakash1971009

1

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I think this is your answer to

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