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NAME

weco - Perl modul to apply something like Western Electric SPC trend rules input data.

SYNOPSIS

use weco

DESCRIPTION

The modul follows an object oriented approach. A object contains the data and different sigmas can be defined for above and below target, to be used with non symmetric distributions.

Currently existing rules 1-7:

$self->check_x_y_z_s cchcks if x out of the last y samples where more than z sigma away from the target to the same side.

PREREQUISITES

Statistics::Descriptive


COREQUISITES

none


TODO

Any other good suggestions that people send me!


BUGS

Probably, but at moment not known.


AUTHOR

Gerhard Spitzlsperger gerhard.spitzlsperger@gs68.de http://www.gs68.de


COPYRIGHT AND LICENSE

Copyright (c) 1999 - 2004, Gerhard Spitzlsperger. All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl.


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