Q. 5 B4.9( 14 Votes )

The mean and stan

Answer :

It is given in the question that,

Total number of incorrect sum of observations = 200


Also, correct sum of observations = 200 – 8 + 12


= 204




= 10.2


Now, we know that:






Thus,


= 2080 – 64 + 144


= 2160






= 1.98


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