I think the calculation you are making here:
1 2 3 | <br /> overall average = (22.421875 + 19.417475 + 24.000000)/3<br /> |
is the average of the average fuel milages. I belive the calculation for average fuel milage is in fact ( miles ) / ( gallons ) and that this quantity is named “average” since calculating “actual fuel milage” would require introducing a set of standard conditions per vehicle ( standard temperature , air pressure , fuel mixture , road surface friction , weather conditions , driving style , ect. ) to arrive at the value of actual miles per gallon. Since simply dividing the number of miles driven by the number of gallons consumed ignores all the possible parameters in the problem the calculation is refered to as “average miles per gallon”. I’ll look into this but thats my guess…
