Math, asked by rohannaik300, 2 months ago

values togather.
4. Two samples of size 10 and 20 have mean 22.5. If their respective
standard deviations are 12 and 7. Find the S.D of the combined
sample.​

Answers

Answered by sahelazad786
4

Answer:

Dear student, 

The question seems incomplete as the mean of only one of the samples is given. Suppose we assume that both the samples have the same mean then the combined standard deviation would be calculated as follows:

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