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05-03-2006, 04:26 PM
Replies: 25
Views: 4,664
Posted By gonavy

Re: Dropping Users from Mileage Database

understood. But that is not an average. Average is normally interpreted as the arithmetic mean of the data set.

Yes- if 10 people drove reasonably far and got 50mpg, I would believe their...
05-02-2006, 02:25 PM
Replies: 25
Views: 4,664
Posted By gonavy

Re: Dropping Users from Mileage Database

No.

If Jason is performing a simple arithmetic mean of each driver's average that is true. But "averaging averages" is the #1 mistake in elementary statistics, and Jason is not making it (I hope....
05-02-2006, 05:14 AM
Replies: 25
Views: 4,664
Posted By gonavy

Re: Dropping Users from Mileage Database

Agreed- skewing the data to those who regularly contribute, as opposed to those who toos in their 1st few tanks, is not a good idea. Most people I know base 'their MPG' off of the 1st couple of...
05-01-2006, 05:53 AM
Replies: 25
Views: 4,664
Posted By gonavy

Re: Dropping Users from Mileage Database

There was a suggestion a few months back to 'gray out' inactive contributors after say, 3 or 6 months. Jason's a busy guy.

Its not good to delete them- their numbers are a valid as anyone elses...
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