EXPHAZ

EXPHAZ (LET)

Library Function

Compute the exponential hazard function.

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.

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.

LET A = EXPHAZ(3)
LET Y = EXPHAZ(X1)
LET Y = EXPHAZ(X1,2,5)

The general form of the exponential distribution has the following hazard function:

where is a location parameter and is a scale parameter.

None

None

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.

"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).

Reliability

1998/5

YLIMITS 0 2
TITLE AUTOMATIC
PLOT EXPHAZ(X) FOR X = 0.01 0.01 10