IWEPPF

IWEPPF (LET)

Library Function

Compute the standard form of the inverted Weibull percent point function with tail length parameter .

The standard form of the inverted Weibull percent point function is:

LET <y> = IWEPPF(<p>,<GAMMA>)             <SUBSET/EXCEPT/FOR qualification> where <p> is a variable, number, or parameter;
            <y> is a variable or a parameter (depending on what <p> is) where the computed inverted Weibull ppf 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 = IWEPPF(0.9,2)
LET A = IWEPPF(A1,4)
LET X2 = IWEPPF(P,8)

None

None

IWECDF	= Compute the inverted Weibull cumulative distribution function.
IWEPDF	= Compute the inverted Weibull probability density 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.
PROBABILITY PLOT	= Generate a probability plot.
RANDOM NUMBERS	= 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 X 
    Y1LABEL DISPLACEMENT 12 
    X1LABEL P 
    TITLE IWEPPF (GAMMA = 0.5) 
    PLOT IWEPPF(P,0.5) FOR P = 0.01 0.01 0.99 
    TITLE IWEPPF (GAMMA = 1) 
    PLOT IWEPPF(P,1) FOR P = 0.01 0.01 0.99 
    TITLE IWEPPF (GAMMA = 2) 
    PLOT IWEPPF(P,2) FOR P = 0.01 0.01 0.99 
    TITLE IWEPPF (GAMMA = 5) 
    PLOT IWEPPF(P,5) FOR P = 0.01 0.01 0.99 
    END OF MULTIPLOT