R packages - Oct 2008 - New versions of two packages: granova and PSAgraphics

Dear R users,

This is to announce new versions of our packages granova and PSAgraphics, both
now v.1.2.

granova derives from ?graphical analysis of variance.? The package consists of
four functions that facilitate seeing basic data as well as standard summary
statistics for various ANOVA applications. The functions are especially
flexible, so they are able to handle widely different data specifications. Focus
is directed to basic questions that drive methods, so that the graphics can help
to learn how data play out in answer to question(s) posed by methods. Experience
suggests these functions can be particularly helpful for students and
non-statistician analysts, since they help understand the methods themselves, as
well as the data. Dynamic graphics are used to depict two-way data. In all cases
numerical results accompany the graphical displays.

PSAgraphics aims chiefly to facilitate visualization of various results in the
context of propensity score analysis. One set of functions concerns assessment
of covariate balance, with respect to defined propensity scores; both numerical
and graphical functions are provided. Two other functions help to understand PSA
effects after adjustment for propensity scores. The functions have been designed
to be flexible, and in all cases numerical results complement the graphic
displays.

Various documents and displays that illustrate graphic results for these methods
are available; write rmp at  rmpruzek at yahoo.com .

All comments, suggestions for improvement and bug-reports are solicited.

Bob Pruzek & James Helmreich






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