Transform > Probability Distributions > Weibull


Calculates the probability densities, cumulative probabilities, and inverse cumulative probabilities for a Weibull distribution.

The probability density function of the Weibull distribution is given by: f(x;k,a) = (k/a)*(x/a)^(k-1)*exp(-(x/a)k)



Dialog box items

Source Column:
Enter the column you want to evaluate.

Target Column:
Enter a storage column for the generated values. Leave blank to have VisualStat automatically name the target column.

Choose from the following options:

oProbability density: Choose to calculate the probability densities.

oCumulative probability: Choose to compute the cumulative probabilities.

oInverse cumulative probability: Choose to compute the inverse of the cumulative probabilities.

Distribution: Select the distribution for the variable.

Scale : Sets the scale parameter for the distribution. The scale parameter must be positive.

Shape: Sets the shape parameter for the distribution. The shape parameter must be positive.



Example of using the probability density function (pdf)




See Also:

Probability Distributions

Web Resource: Weisstein, Eric W., Wolfram MathWorld. | Wikipedia