John,
One last thought: what about Roger Newson's -somersd- with the cluster
option (cluster on batch?)
Buzz Burhans
[email protected]
>>
>> ________________________________________
>> From: [email protected]
>> [mailto:[email protected]] On Behalf Of
>> Wallace, John
>> Sent: Monday, May 10, 2004 7:48 PM
>> To: '[email protected]'
>> Subject: st: unpaired regression
>>
>> I have two measures of batch performance on which I'd like to
>> perform a
>> regression. The measurements are taken on separate samples
>> from the batch,
>> and typically look something like:
>> Assay1 Assay2
>> Btch1 5400
>> Btch1 5320
>> Btch1 5670
>> Btch1 0.900
>> Btch1 0.905
>> Btch1 0.898
>> Btch2 8600
>> Btch2 7840
>> Btch2 7550
>> Btch2 0.962
>> Btch2 0.955
>> Btch2 0.943
>> ...etc (on for multiple batches which show correlated
>> measures for the two
>> assays)
>> -collapse- ing them to batch averages and then performing the
>> regression is
>> one approach, but it doesn't take variance of the measures
>> themselves into
>> account in the regression. Is there a system for performing
>> this type of
>> analysis?
>>
>
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