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
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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:
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