Question

Solve to get 100 pts.
The mean of 50 items was found to be 40. If
at the time of calculation two items were
wrongly taken as 32 and 12 instead of
23 and 11, then find the correct mean.​

Answer 1

Answer:39.8

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Answer 2

Answer:

39.8

Step-by-step explanation:

Mean of 50 items is 40

x/40 = 50

x = 2000

correct mean

(x-32-12+23+11)/50

(2000-32-12+23+11)/50

1990/50

correct mean = 39.8