The mean of 10 observations was calculated as 40. It was detected on rechecking that the
value of 45 was wrongly copied as 15. Find the correct mean.
Answers
Answered by
3
40 = x/10
x = 400
but correction is x + 30
hence, mean = 430/10
mean = 43
Answered by
3
Answer:
430
Step-by-step explanation:
= 10×40-15+45
=400-15+45
=445-15
=430
SO THE CORRECT MEAN IS 430
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