Question

if the mean of 7,10,4,12,x,3 is 7.5 then find x

Answer 1

Answer:

Step-by-step explanation:

Mean = Sum of Observations / Number of Observations

Mean = 7 + 10 + 4 + 12 + x +3 /  6

7.5 × 6 =  36 +  x

45 = 36 + x

x = 45 - 36

Therefore X = 9

Answer 2

Answer:

Mean = Sum of Observations / Number of Observations

Mean = 7 + 10 + 4 + 12 + x +3 /  6

7.5 × 6 =  36 +  x

45 = 36 + x

x = 45 - 36

Therefore X = 9

Step-by-step explanation: