David Firth, software: QV Calculator
Description
The QV Calculator computes quasi-variances for estimates of a group or factor effect in a generalized linear model (including linear models, logistic regression, log linear models, hazard models, etc.) It can be used either in conjunction with R (as contributed package qvcalc) or Xlisp-Stat on a PC, Mac or Unix computer, or remotely through a web-based input form.
Documentation
Documentation is vailable at two levels of detail:
- a brief description of the methodology, for users of the web-based QV Calculator
- a more complete manual, "Quasi-variances in Xlisp-Stat and on the Web", intended mainly for those who use the QV Calculator in conjunction with Xlisp-Stat on their own computer. Cite as: Firth, D (2000), Quasi-variances in Xlisp-Stat and on the web, Journal of Statistical Software 5.4, 1-13.
The R package qvcalc comes with its own documentation.
Download
For use with R:
The R package qvcalc is available at CRAN.For use with Xlisp-Stat:
If you want to use the QV Calculator on your own computer in conjunction with Xlisp-Stat, the file needed is:- qvcalc.lsp (36k)
After downloading qvcalc.lsp simply Load it into Xlisp-Stat to make available the QV Calculator.
The ship-damage example discussed in the documentation is in a separate file:
- example.lsp (8k)
QV Calculator
© David Firth, 1999. This software carries ABSOLUTELY NO WARRANTY: feel free to use it, but use it at your own risk!
Related links:
- CRAN (for R)
- Xlisp-Stat
- David's home page
