Question

How would one derive computational formula for standard deviation from definition using elementary algebra?

Answer 1

how do you mean
\[s = \sqrt{\frac{\sum_{}^{}(x _{i}-X)^{2}}{n-1}}\]

Answer 2

This is an extra credit question and this is literally all the information the teacher gave us.

Answer 3

its the square root of the average squared deviation

Answer 4

so thats the answer?

Answer 5

What definition were you given in your class?

Answer 6

\[s= \sqrt{n \Sigma(x^{2}}) - (\Sigma x)^{2} / n(n-1)\]well he didn't teach us computational standard deviation and its not in the book so i looked it up and it's suppose to look like this and the n(n-1) is under the equation but in the square