Question

Mean data set comprising of 16 observations is 16. One one of the observation valued 16 is deleted and 3 new observations valued 3 4 and 5 are added to the data then the mean of the resultant data

Answer 1

Step-by-step explanation:

Initially there are 16 observations and the mean is 16.

Hence, the initial sum =16×16=256

After adding the new observations and deleting one observation of 16 , the sum is

256−16+3+4+5=252

Number of observations =16−1+3=18

New Average = 18

252

=14

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Answer 2

Answer:

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Step-by-step explanation:

Initially there are 16 observations and the mean is 16.  

Hence, the initial sum =16×16=256

After adding the new observations and deleting one observation of 16 , the sum is  

256−16+3+4+5=252

Number of observations =16−1+3=18

New Average =  

18 /252

​=14