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reliaR (version 0.2)

qq.gen.exp: Quantile versus quantile (QQ) plot for the Generalized Exponential(GE) distribution

Description

The function qq.gen.exp() produces a QQ plot for the GE based on their MLE or any other estimator. Also, a line going through the first and the third quartile can be sketched.

Usage

qq.gen.exp(x, alpha.est, lambda.est, main = " ", line.qt = FALSE, ...)

Value

The function qq.gen.exp() carries out a QQ plot for the GE

Arguments

x

vector of observations

alpha.est

estimate of the parameter alpha

lambda.est

estimate of the parameter lambda

main

the title for the plot

line.qt

logical; if TRUE, a line going by the first and third quartile is sketched.

...

additional arguments to be passed to the underlying plot function.

References

Gupta, R. D. and Kundu, D. (2001). Exponentiated exponential family; an alternative to gamma and Weibull distributions. Biometrical Journal, 43(1), 117 - 130.

Gupta, R. D. and Kundu, D. (1999). Generalized exponential distributions. Australian and New Zealand Journal of Statistics, 41(2), 173 - 188.

See Also

pp.gen.exp for PP plot and ks.gen.exp function

Examples

Run this code
## Load data
data(bearings)
## Estimates of alpha & lambda using 'maxLik' package
## alpha.est = 5.28321139, lambda.est = 0.03229609

qq.gen.exp(bearings, 5.28321139, 0.03229609, line.qt = FALSE)

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