The mean marks scored by 100 students was found to be 60. Later on it was discovered that- 45 was misread as 54. Find the correct mean. a score 8. The mean of five numbers is 27. If one number is excluded, their mean is 25. Find the vl number. Ta indiidhal oio
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Answer:
39.7
Step-by-step explanation:
Mean score = 40
mean=sum of observation /no of observations
sum of observations = mean * no of observations
that is 40 x 100
= 4000
after replacement, sum of new observation=4000-83+53
=3970
mean of new observation = 3970/100
=39.7
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