NO
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It is: (73+93)/2 = 83 which is the average number
Multiply avg length times avg width times avg depth to get cubic feet them multiply by 7.48 to get gallons Question can't be answered without third deminsion. Formula: length times width times depth times 7.48 equals gallons
No, a sum of averages is NOT as accurate as the average of the whole. For example: A=avg (1,10) = 5.5 B=avg (1, 1, 1, 1, 1) = 1 avg(A,B) = 3.25 [Average of averages] avg(1,1,1,1,1,1,10) = 2.29 [The original data set]
That's something like: SELECT AVG(column) AS average_value_of_column FROM table;
AVG (: