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Statistics? (archive)
[ Follow Ups ] [ 8-series (E31) Message Board ] [ Msg. Board FAQ ]
Posted by Stan on April 26, 2000 at 14:27:21:

In Reply to: As Promised posted by Jim Conforti on April 25, 2000 at 22:39:15:

For Jim C. and Len C.
I'm trying not to be a spoilsport but....Did you only perform one run with each final set-up (stock, Dinan, Conforti, Custom)? If so, statistically speaking, your numbers are...how to say this politely...meaningless. I know you each did lot's of runs while you changed and fiddled, but without performing at least three (and the real scientists/engineers out there will yell at me for not saying five) runs under the same conditions to get some kind of relevant database, you may find it hard to convince anyone based on "numbers". I'm not implying that the differences aren't there, and Jim C's data shows an impressive gain, but without some error bars, the data doesn't support a conclusion.

As an aside, it may be interesting to take this issue to the real world. Timed drag runs or autocross runs while changing out the chips would tell us a lot more than the idealized dyno runs do. A lot of the issues become more compounded in real world driving and the real differences in the chips would be apparent.

Stan C.
'92 Blue 850iA, 79K mi.

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