[Rd] application to mentor syrfr package development for Google Summer of Code 2010

From: James Salsman <jsalsman_at_talknicer.com>
Date: Sun, 07 Mar 2010 17:11:01 -0800

Per http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010
-- and http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010:syrfr

I propose the following test which an applicant would have to pass in order to qualify for the topic:

  1. Describe each of the following terms as they relate to statistical regression: categorical, periodic, modular, continuous, bimodal, log-normal, logistic, Gompertz, and nonlinear.
  2. Explain which parts of http://bit.ly/tablecurve were adopted in SigmaPlot and which weren't.
  3. Use the 'outliers' package to improve a regression fit maintaining the correct extrapolation confidence intervals as are between those with and without outlier exclusions in proportion to the confidence that the outliers were reasonably excluded. (Show your R transcript.)
  4. Explain the relationship between degrees of freedom and correlated independent variables.

Best regards,

James Salsman

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