Question

If the mean of 8,10,7,x+2 and 6 is 9,find the value of x

Answer 1

Answer:

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Step-by-step explanation:

the total number given is 5

mean = sum of all observations / total number of observations

9 = 8 + 10 + 7 + ( X + 2 ) + 6 / 5

9 × 5 = 33 + X

45 = 33 + X

X = 45 - 33

X = 12

Answer 2

Answer:

9=8+10+7+(x+2)+6/5

9×5=33+x

45=33+x

x=33-45

So,x=12