Question

Mean of 25 observations was found to be 78.4. But later it was found that 96 was mis-read as 69. Then the corrected mean​

Answer 1

Answer:

79.48

Step-by-step explanation:

mean= sum of observations/ no. of observations

let correct sum of observations be x

78.4= x-96+69/25

1960=x-27

x=1987

new mean = 1987/25

=79.48

Answer 2

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