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$\Largeσ = \sqrt{\dfrac{\sum\limits_{i=1}^{n}{{\lvert x_i-\bar{x}\rvert^2}}}{n}}$σ, equals, square root of, start fraction, sum, start subscript, i, equals, 1, end subscript, start superscript, n, end superscript, open vertical bar, x, start subscript, i, end subscript, minus, x, with, \bar, on top, close vertical bar, squared, divided by, n, end fraction, end square root

$σ = \sqrt{\dfrac{\sum\limits_{i=1}^{n}{{\lvert x_i-\bar{x}\rvert^2}}}{n}}$σ, equals, square root of, start fraction, sum, start subscript, i, equals, 1, end subscript, start superscript, n, end superscript, open vertical bar, x, start subscript, i, end subscript, minus, x, with, \bar, on top, close vertical bar, squared, divided by, n, end fraction, end square root

$\text{EAM} = {\dfrac{\sum\limits_{i=1}^{n}{{\lvert x_i-\bar{x}\rvert}}}{n}}$start text, E, A, M, end text, equals, start fraction, sum, start subscript, i, equals, 1, end subscript, start superscript, n, end superscript, open vertical bar, x, start subscript, i, end subscript, minus, x, with, \bar, on top, close vertical bar, divided by, n, end fraction

$\sqrt{\dfrac{\sum\limits_{i=1}^{n}{{\lvert x_i-\bar{x}\rvert^2}}}{n}}$square root of, start fraction, sum, start subscript, i, equals, 1, end subscript, start superscript, n, end superscript, open vertical bar, x, start subscript, i, end subscript, minus, x, with, \bar, on top, close vertical bar, squared, divided by, n, end fraction, end square root

$\sqrt{\dfrac{\sum\limits_{i=1}^{n}{{( x_i-\bar{x})^2}}}{n}}$square root of, start fraction, sum, start subscript, i, equals, 1, end subscript, start superscript, n, end superscript, left parenthesis, x, start subscript, i, end subscript, minus, x, with, \bar, on top, right parenthesis, squared, divided by, n, end fraction, end square root