If the mean of x 1 , x 2 , is 7.5 and the mean of x 1 , x 2 , x 3 , is 8, then the value of x 3 ,

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CollectorBabu · Accepted Answer

Correct Answer: 9. Mean = sum of events / total numbers of events The mean of x 1 , x 2 = 7.5 So total of x 1 , x 2 (x 1 + x 2 ) = 7.5 x 2 = 15 The mean of x 1 , x 2 , x 3 = 8 So total of x 1 , x 2 , x 3 (x 1 + x 2 + x 3 )= 8 x 3 = 24 x 1 + x 2 + x 3 = 8 x 3 = 24 15 + x 3 = 24 x 3 = 24 – 15 = 9

If the mean of x 1 , x 2 , is 7.5 and the mean of x 1 , x 2 , x 3 , is 8, then the value of x 3 ,

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