Question

mean of 11 observations is 17.5 if one observation value 15 is deleted then the mean of remaning observations is


find the mean of two digit natural numbers which have both digits asme

the difference between the maximum and the minimum observation in the data is called

Answer 1

Answer:

Sum of the observation =11×17.5=192.5

If one observation value 15 is deleted then new sum of observations will be:

192.5−15=177.5

And the number of observations will decrease by 1 i.e. 10.

New mean =

10

177.5

=17.75

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