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Originally Posted by bulldog
OK, so just for fun.
I took the difference from start to current miles as the miles recorded. Only used entries that had 2000 or more recorded miles.
Calculated the total gas used for each entry by dividing the miles recorded by the avg gas milage listed.
Seemingly there were no invlaid entries with abvious errors, like 2 MPG, etc.
Summed all the miles recorded and gas used for valid entries and did the quick avg MPG calculation.
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Since you already have some data worked up, could you also do a quick calculation where you average the drivers fuel economy (but still do not include those that have less than 2000 miles)? To clarify, I would like to see what the numbers would be if you sum the fuel economy of every entry and divide by the total number of entries. It will be interesting to see if that gives similar numbers.
Thanks.