Mean marks scored byoo students was
found to be 40 - Latel on at was found hat
a score of sI was missead hais: Find
the coned mean
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1
Answer:
Step-by-step explanation:
mean score is = 40
mean = sum of observation /no of observations
sum of observations = mean multiplied by the number of observations
That will be 40 x 100
= 4000
Now after the replacement, sum of new observation
= 4000 - 83 + 53
=3970
mean of new observation
= 3970/100
=39.7
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