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two questions about regression properties

  • To: mathgroup at smc.vnet.net
  • Subject: [mg112598] two questions about regression properties
  • From: richard i pelletier <bitbucket at comcast.net>
  • Date: Wed, 22 Sep 2010 01:57:28 -0400 (EDT)
  • References: <i5l9qg$7ge$1@smc.vnet.net>

hi,

i hope someone can answer two questions about LinearModelFit (hence, 
version 7)...

1. exactly how is the variance partition in EigenstructureTable computed?
   i can see that the eigenvalues are those of the parameter correlation 
matrix, but i have no idea how to get the variance partition.

2. what is the difference between MeanPredictionBands and 
SinglePredictionBands?
   i can see that they create different interval estimates of predicted 
response, but how do they differ conceptually?

thanks in advance.

rip

-- 
email address is r i p 1 AT c o m c a s t DOT n e t


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