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# what is the standard deviation, s of 0.26 and 0.23

mcburphy13 Mathematics 1 3

what is the standard deviation, s of 0.26 and 0.23

Posted by mcburphy13 | Posted at Mar 26, 2000 | Categories: Mathematics

$the standard deviation (sigma)= sqrt{ frac{ig{(x_1-overline{x})^2+(x_2-overline{x})^2+...+(x_n-overline{x})^2}}{ig{n}}} \and overline{x}= frac{ig{x_1+x_2+...+x_n}}{ig{n}} \---------------------\x_1=0.26; x_2=0.23 Rightarrow overline{x}= frac{0.26+0.23}{2} =0.245\sigma=sqrt{ frac{ig{(0.26-0.245)^2+(0.23-0.245)^2}}{ig{2}}} =sqrt{ frac{ig{(0.015)^2+(-0.015)^2}}{ig{2}}} =$ $=sqrt{ frac{ ig{2cdot (0.015)^2}}{ig{2}}} =sqrt{ (0.015)^2} =0.015$