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Earn +20 ptsQ: What does Xn mean math?
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What is negative exponents mean in math?
x-n = 1 / xn
What is the formula for geometric mean?
The geometric mean of 'A' and 'B' is the square root of ( A x B ). Edit: The geometric mean of n positive numbers, x1, x2, ... , xn is the nth root of x1*x2* ... *xn.
Newtons iteration formula for finding square root of N?
xn+1 = 1/2 ( xn + N/xn )
What is x to the power of the number that it is divided by?
This is represented as the algebraic expression xn/n or xn ÷ n.
How to calculate the standard deviation?
Suppose you have n observations {x1, x2, ... , xn} for a variable, X. Calculate m = (x1 + x2 + , ... , + xn)/n, the mean value. Calculate s2 = (x12 + x22 + , ... , + xn2)/n Then Variance = s2 - m2 = [mean of the squares] - [square of the mean] and the standard deviation = sqrt(Variance)
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