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Question

Dataset :- 3,5,6,7,x,3,4
Mean of the data set is given as 5. What is the value of x ?
  1. 7

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Solution

The correct option is A 7
Dataset :- 3,5,6,7,x,3,4

Sum of the observations in the dataset =3+5+6+7+x+3+4=x+28

Mean = Sum of ObservationsNumber of Observations

5=x+287
3528=x
x=7

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