The square root of 2,500,000 = 1,581.13883
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Answer is Square-root(14) or approximately +/-3.74. Explanation: To find the standard deviation, you must first find the mean of the population. In this case, the mean is (3+6+12)/3 = 21/3 = 7. Then, we take the Square root of (average of the Squares of (mean - each number)). = Square-root of ( [ (7-3)^2 + (7-6)^2 + (7-12)^2 ] / 3 ) = Square root of ( [ 16 + 1 + 25 ] / 3 ) = Square root of (42 / 3) = Square root of (14)
9.79796
sqrt(x2)=|x|, (sqrt(x))2=x*sqrt=square root of
square root(1200) = 34.6410162sqrt 1200 = sqrt 400 x sqrt 3 = 20 root 3 = 34.64
the answer is 947.51569