IWECHAZ

IWECHAZ (LET)

Library Function

Compute the standard form of the inverted Weibull cumulative hazard function with tail length parameter .

The standard form of the inverted Weibull cumulative hazard function is:

LET <y2> = IWECHAZ(<y1>,GAMMA)             <SUBSET/EXCEPT/FOR qualification>
where <y1> is a variable, number, or parameter;
            <y2> is a variable or a parameter (depending on what <y1> is) where the computed inverted Weibull cumulative hazard value is stored;
            <GAMMA> is a positive number or parameter that specifies the tail length parameter;
and where the <SUBSET/EXCEPT/FOR qualification> is optional.

LET A = IWECHAZ(3,2)
LET A = IWECHAZ(A1,4)
LET X2 = IWECHAZ(X1,8)

The general form of the inverted Weibull cumulative hazard function is:

where is the location parameter and is the scale parameter.

None

None

IWECDF	= Compute the inverted Weibull cumulative distribution function.
IWEHAZ	= Compute the inverted Weibull hazard function.
IWEPDF	= Compute the inverted Weibull probability density function.
IWEPPF	= Compute the inverted Weibull percent point function.
WEIPDF	= Compute the Weibull probability density function.
GAMPDF	= Compute the gamma probability density function.
CHSPDF	= Compute the chi-square probability density function.
NORPDF	= Compute the normal probability density function.
LOGPDF	= Compute the lognormal probability density function.
PPCC PLOT	= Generate a PPCC plot.
PROB PLOT	= Generate a probability plot.
RAND NUMB	= Generate random numbers.

"Continuous Univariate Distributions: Volume 1", 2nd. Ed., Johnson, Kotz, and Balakrishnan, 1994, John Wiley, pp. 693.

Reliability Analysis

2001/10

    MULTIPOT 2 2 
    MULTIPLOT CORNER COORDINATES 5 5 95 95 
    MULTIPLOT SCALE FACTOR 2 
    Y1LABEL Hazard 
    Y1LABEL DISPLACEMENT 12 
    X1LABEL X 
    TITLE IWECHAZ (GAMMA = 0.5) 
    PLOT IWECHAZ(X,0.5) FOR X = 0.01 0.01 5 
    TITLE IWECHAZ (GAMMA = 1) 
    PLOT IWECHAZ(X,1) FOR X = 0.01 0.01 5 
    TITLE IWECHAZ (GAMMA = 2) 
    PLOT IWECHAZ(X,2) FOR X = 0.01 0.01 5 
    TITLE IWECHAZ (GAMMA = 5) 
    PLOT IWECHAZ(X,5) FOR X = 0.01 0.01 5 
    END OF MULTIPLOT