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The average weight of 30 students is 2kg afterwards it was found out that one reading was wrongly written as 40kg instead of 46kg find the correct mean.
The average weight of 30 students is 2kg afterwards it was found out that one reading was wrongly written as 40kg instead of 46kg find the correct mean.
Answers & Comments
Answer:
Mean score = 2kg
Mean = Sum of observation/ no. of observations
Sum of observation = mean* no. of observations
Step-by-step explanation:
That is 30× 2= 60
After replacement,sum of new observation
= 60-46+40=54
Mean of new observation
=54/30=1.8
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