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[" The mean of "7" observations is "8" a...

[" The mean of "7" observations is "8" and their variance is "16." If five of the observations are "2,4,10,12,12," find the "],[" other two observations."],[" For a group of "200" candidates,the mean and standard deviation were found to be "40" and "15" respectively.Later "],[" for as discovered that the score "43" and "35" were misread as "34" and "53" respectively.Find the corrected mean "]

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For a group of 200 candidates, the mean and standard deviation of scores were found to be 40 and 15 respectively. Later on if was discovered that the scores of 43 and 35 were misread as 34 and 53 respectively. Find the correct mean and standard derivation corresponding to the correted figures.

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