WALCHAZ
Name:
Type:
Purpose:
Compute the Wald cumulative hazard function with shape parameter
.
Description:
The Wald distribution has the following cumulative hazard
function:
where
is the shape parameter and WALCDF is the cumulative
distribution function of the Wald distribution function
respectively.
Syntax:
LET <y> = WALCHAZ(<x>,GAMMA)
<SUBSET/EXCEPT/FOR qualification>
where <x> is a variable or a parameter containing positive
values;
<y> is a variable or a parameter (depending on what
<x> is) where the computed Wald cumulative
hazard values are stored;
<GAMMA> is a positive number or parameter that
specifies the shape parameter;
and where the <SUBSET/EXCEPT/FOR qualification> is optional.
Examples:
LET A = WALCHAZ(3,10)
LET A = WALCHAZ(A1,10)
LET X2 = WALCHAZ(X1,10)
Default:
Synonyms:
Related Commands:
WALCDF

= Compute the Wald cumulative distribution function.

WALPDF

= Compute the Wald probability density function.

WALPPF

= Compute the Wald percent point function.

WALHAZ

= Compute the Wald hazard function.

CHSPDF

= Compute the chisquare probability density function.

FPDF

= Compute the F probability density function.

NORPDF

= Compute the normal probability density function.

TPDF

= Compute the T probability density function.

WEIPDF

= Compute the Weibull probability density function.

FLPDF

= Compute the Fatigue Life probability density function.

IGPDF

= Compute the Inverse Gaussian probability density
function.

RIGPDF

= Compute the Reciprocal Inverse Gaussian probability
density function.

Reference:
"Continuous Univariate Distributions: Volume 1", 2nd. Ed.,
Johnson, Kotz, and Balakrishnan, John Wiley, 1994.
Applications:
Implementation Date:
Program:
TITLE AUTOMATIC
MULTIPLOT CORNER COORDINATES 5 5 95 95
MULTIPLOT 2 2
PLOT WALCHAZ(X,1) FOR X = 0.01 0.01 3
PLOT WALCHAZ(X,2) FOR X = 0.5 0.01 2
PLOT WALCHAZ(X,3) FOR X = 0.7 0.01 1.3
PLOT WALCHAZ(X,0.5) FOR X = 0.1 0.01 3
END OF MULTIPLOT
Date created: 11/13/2002
Last updated: 4/4/2003
Please email comments on this WWW page to
alan.heckert@nist.gov.
