Question

109. The mean of 100 observations is 50.
If one of the observations which was
50 is replaced by 150, the resulting
mean will be-​

Answer 1

Answer:

51

Step-by-step explanation:

mean=total of obs./no. of observations

total of obs.=x

50=x/100

x=5000

one obs.=50

mistaken obs.=150

so,150-50=100

now,total of observations =5000+100=5100

resulting mean=5100/100

ans=51

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