Question

the average of 25 obsevations is 27. if one observation is included the average still remains 27 .find the included observation​

Answer 1

Answer:

0

hope it helps you

Answer 2

Answer:

let the sum of old observation be x

=> x/25=27 =>x=25×27

let the new observation be y

=> (x+y)/26=27 => x+y=26×27 => y=(26×27)-(25×27)

y=27

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