NAME

ConfInt - Perl extension for calculating the confidence interval of meassured values.

SYNOPSIS

        use ConfInt;
        ConfInt([ARGUMENT_1],[ARGUMENT_2]);
 

DESCRIPTION

This module calculates and returns the relative error of the turned over values. ConfInt needs two things to be turned over: 1st is the width of the confidence interval. 2nd is the reference to an array including the values. Supported confidence interval width:

        0.7             (+/- 0.35) ; probability of 0.65
        0.6             (+/- 0.30) ; probability of 0.70
        0.5             (+/- 0.25) ; probability of 0.75
        0.4             (+/- 0.20) ; probability of 0.80
        0.3             (+/- 0.15) ; probability of 0.85
        0.2             (+/- 0.10) ; probability of 0.90
        0.1             (+/- 0.05) ; probability of 0.95
        0.05            (+/- 0.025); probability of 0.975
        0.02            (+/- 0.01) ; probability of 0.99
        0.01            (+/- 0.005); probability of 0.995
 

EXAMPLE: use ConfInt; @ValueArray = (1,1,1,1,1,2,3,2,1,1,1,1,2,1); $ReturnValue = &ConfInt::ConfInt(0.05,\@ValueArray); print "$ReturnValue";

EXPORT

Returns the relative error of a summary of values.

AUTHOR

written by Christian Gernhardt <christian.gernhardt@web.de>

COPYRIGHT

Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation

SEE ALSO

perl(1).