Normal Distribution Probability Calculator


An online calculator to calculate probabilities associated with normally distributed variables. There are 3 calculators depending on which probability you wish to calculate. You might find small differences between using tables and using these calculators. These are due to round off errors. Let X be a normally distributed variable.

Calculator 1: Find probability P(X < x)

1 - Enter the mean mu, sigma the standard deviation of the normal distribution and x then press "enter".

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Calculator 1: Find probability P(x1 < X < x2)

1 - Enter the mean mu, sigma the standard deviation of the normal distribution and x1 and x2 then press "enter".

Your browser is completely ignoring the <APPLET> tag!

Calculator 1: Find probabilty P(X > x)

1 - Enter the mean mu, sigma the standard deviation of the normal distribution and x then press "enter".

Your browser is completely ignoring the <APPLET> tag!



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Updated: 2 April 2013

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