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help for ^gqptl^                                                  (STB-55: sg140)
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Gumbel quantile plot and a test statistic for choice of extreme models
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   ^gqpt^  varname [^if^ exp] [^in^ range] 


Description
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^gqpt^ provides the ^Gumbel quantile plot^ (GQP) and a ^statistical test^
to deal with the statistical choice of extreme models.
The Output provides the GQP, estimates of the location (^lambda^)
and scale (^delta^) parameters of the Gumbel distribution and the
values of statistics ^Q^ and ^W^.

Example
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        . ^gqpt varname^


Author
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       Manuel G. Scotto
       University of London
       email: arima@@mail.telepac.pt
 
Reference
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Tiago de Oliveira, J. and Gomes,. M. I. (1984).
Two test statistics for choice of univariate extreme models.
Statistical extremes and applications, J. Tiago de Oliveira ed.,
D. Reidel, Dordrecht.


Also see
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    STB: STB-55 sg140