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Scripting Guide - SAS

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Appendix A JSL Syntax Reference 645<br />

Probability Functions<br />

Arguments<br />

x A number.<br />

mu A location.<br />

sigma The scale.<br />

Frechet Quantile(p, mu, sigma)<br />

Description<br />

Returns the quantile associated with a cumulative probability p for a Fréchet distribution with location<br />

mu and scale sigma.<br />

Arguments<br />

p The probability of the quantile desired; p must be between 0 and 1.<br />

mu A location.<br />

sigma The scale.<br />

Gamma Density(q, alpha, , )<br />

Description<br />

Calculates the density at q of a Gamma probability distribution.<br />

Returns<br />

The density function at quantile q for the gamma density distribution for the given arguments.<br />

Arguments<br />

q A quantile.<br />

alpha Shape parameters that must be greater than 1.<br />

scale Optional scale, which must be greater than 0. The default is 1.<br />

threshold Optional threshold parameter. The allowable range is – ∞ < θ < ∞. The default is 0.<br />

See Also<br />

The section on probability functions in the Using JMP.<br />

Gamma Distribution(x, )<br />

IGamma(x, )<br />

Description<br />

Returns cumulative distribution function at quantile x for the gamma distribution with shape, scale,<br />

and threshold given.<br />

Gamma Quantile(p, )<br />

Description<br />

Returns the pth quantile from the gamma distribution with the shape, scale, and threshold<br />

parameters given.

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