Question

it the mean of 5 observation
x ,X+2, x+4,x+6, x+8 is 11
then the mean of St 3o observation is​

Answer 1

Answer:

11=(x+x+2+x+4+x+6+x+8)÷5

55=20+5x

5x=35

x=7

Mean is the sum of all observations by no of observations

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