pls give answer to my question it is urgent
the mean of five numbers is 28.if one of the number is excluded ,the mean gets reduced by 2.find the excluded mean
kashish212:
can anybody answer
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mean = ( sum of the observations )/(number of observations )
according to the problem given,
1 )mean of 5 numbers = 28
sum of 5 numbers = 5 × 28 = 140 ---( 1 )
if one number excluded the new mean = 28 - 2
= 26
number of observations = 4
sum of the 4 observations = 4 × 26
= 104---( 2 )
The excluded number = ( 1 ) - ( 2 )
= 140 - 104
= 36
I hope this helps you.
according to the problem given,
1 )mean of 5 numbers = 28
sum of 5 numbers = 5 × 28 = 140 ---( 1 )
if one number excluded the new mean = 28 - 2
= 26
number of observations = 4
sum of the 4 observations = 4 × 26
= 104---( 2 )
The excluded number = ( 1 ) - ( 2 )
= 140 - 104
= 36
I hope this helps you.
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