April 23, 2008 at 8:03 am #49928
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In normal distribution curve, Mean+/- 1std deviation =68.26% of the data points, Mean+/- 2std deviation =95.4% and so on.
My querry is how these values were achieved/derived? Is there any formula for the same?0April 23, 2008 at 12:09 pm #171406
The probability density function for the Gaussian (Normal) Distribution is:
f(x) = vertical height of a point on the normal distribution
x = distance along the x axis
ó = standard deviation of the data distribution
µ = mean of the distribution
e = exponential constant = 2.71828
ð = pi = 3.141590April 23, 2008 at 3:27 pm #171411
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