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The mean of the data set comprising of 16 observation is 16. If one of the observation valued 16 is deleted and three new observations 3, 4, & 5 are added to the data. Then the mean of resultant data is 16.8 (2) 16.0 (3) 15.8 (4) 14.0

A

15.8

B

16.8

C

`14.0`

D

`16.0`

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The correct Answer is:
B
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The mean of the data set comprising of 16 observation is 16. If one of the observation valued 16 is deleted and three new observations 3, 4, & 5 are added to the data. Then the mean of resultant data is  (1)16.8(2) 16.0(3)15.8 (4)14.0

The mean of the data set comprising of 16 observations is 16. If one of the observation valued 16 is deleted and three new observations valued 3, 4 and 5 are added to the data, then the mean of the resultant data, is : (1) 16.8 (2) 16.0 (3) 15.8 (4) 14.0

The mean and variance of a data set comprising 15 observations are 15 and 5 respectively. If one of the observation 15 is deleted and two new observations 6 and 8 are added to the data, then the new variance of resulting data is

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