Dataplot Vol 2 Vol 1

# EXPHAZ

Name:
EXPHAZ (LET)
Type:
Library Function
Purpose:
Compute the exponential hazard function.
Description:
The standard form of the exponential distribution has the following hazard function:

That is, the hazard function for the exponential distribution is simply a constant.

Syntax:
LET <y> = EXPHAZ(<x>,<loc>,<scale>)             <SUBSET/EXCEPT/FOR qualification>
where <x> is a variable, a number, or a parameter;
<y> is a variable or a parameter (depending on what <x> is) where the computed exponential hazard value is saved;
<loc> is a variable, a number, or a parameter that defines the location parameter;
<scale> is a variable, a number, or a parameter that defines the scale parameter;
and where the <SUBSET/EXCEPT/FOR qualification> is optional.

The location and scale parameters are optional.

Examples:
LET A = EXPHAZ(3)
LET Y = EXPHAZ(X1)
LET Y = EXPHAZ(X1,2,5)
Note:
The general form of the exponential distribution has the following hazard function:

where is a location parameter and is a scale parameter.

Default:
None
Synonyms:
None
Related Commands:
 EXPCHAZ = Compute the exponential probability density function. EXPCDF = Compute the exponential cumulative distribution function. EXPPDF = Compute the exponential probability density function. EXPPPF = Compute the exponential percent point function. WEIHAZ = Compute the Weibull hazard function. EV1HAZ = Compute the extreme value type I hazard function. EV2HAZ = Compute the extreme value type II hazard function. LGNHAZ = Compute the lognormal hazard function.
Reference:
"Continuous Univariate Distributions--Vol. I", 2nd. Ed., Johnson, Kotz, and Balakrishnan, John Wiley and Sons, 1994.

"Statistical Distributions", 2nd. Edition, Evans, Hastings, and Peacock, Wiley and Sons, 1993 (chapter 18).

Applications:
Reliability
Implementation Date:
1998/5
Program:
YLIMITS 0 2
TITLE AUTOMATIC
PLOT EXPHAZ(X) FOR X = 0.01 0.01 10

Date created: 6/5/2001
Last updated: 4/4/2003
Please email comments on this WWW page to alan.heckert@nist.gov.