Parametric Estimation Program

CDF plot
Histogram
Probability Plot


This program calculates Weibull, Normal, and Lognormal estimates of percentiles from a data set. This program also calculates confidence intervals and tolerance limits for the percentiles.

Format of Your Data - Your data should consist of one column of number, i.e.
1.333
2.444
3.444

Before you proceed, you must transfer your datafile to www1.fpl.fs.fed.us via anonymous ftp. You must place it in the pub/data directory. (If ftp does not run on your machine, e-mail your data to the address given below and it will be placed in the directory.)

The program will calculate your estimates, then write it out, along with your original input data, to a file that has your original filename with an extension of .res added to it. (For example, if you sent a data set called himom, you will get back a data set called himom.res.) You can then retrieve your file via anonymous ftp from the pub/data directory.

Please enter the name of the data set you have put in our /pub/data directory for which you would like parameter estimates.

Type of Fits You Want

Please choose the point estimates, confidence intervals and tolerance limits you desire



For further information on this program, contact James Evans or call him at (608) 231-9332.

For problems with this web page, please contact Vicki Herian or (608) 231-9236.


[Forest Service] [Forest Products Lab] [FPL Statistics Unit]

Last modified 6/20/01.
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