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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

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