Question
Sun September 25, 2011 By:

Mean of the following data is 21.5. Find the missing value ‘k’. x f 5 6 15 4 25 3 35 k 45 2

Expert Reply
Mon September 26, 2011
The set of observations is 5 ,6,15,4,25,3,35,k,45 and 2
Their sum=140+k
and number of observations=10
Since
 
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