Math, asked by imran7890, 1 year ago

the mean of 40 observations was 160 it was detected on rechecking that the value of 165 was wrongly copied as 125 or computation of mean find the correct mean

Answers

Answered by amitnrw

13

Answer:

Step-by-step explanation:

Mean = 160

Number of observation = 40

Sum = 160*40 = 6400

165 was taken as 125

So actual sum = 6400-125 +165

= 6440

Correct Mean = 6440/40 = 161

amitnrw: Mark as brainliest if it helped

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