the mean of 5 observation is 50.one of the observations was removed from data hence the mean became 45. find the observation which was removed.
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Answered by
10
mean = addition of observation ÷no. of observation
50=x÷5
50×5=x
250=x
mean after removing one observation =45
removed observation =250-45
=205
50=x÷5
50×5=x
250=x
mean after removing one observation =45
removed observation =250-45
=205
Answered by
5
a+b+c+d+e=250
a+b+c+d=180
removed no.(e)=250-180=70
a+b+c+d=180
removed no.(e)=250-180=70
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