Hi, Sorry about this basic question. I am dealing with tourists spending money on [u]gasoline[/u]. In the example in my IMPLAN workbook (CS12-A), you recommend inputting gas expenditures as a commodity change(#3326), then applying retail margins, but you mention that such an analysis could also be done as an industry change (presumably, #326). I tested the difference of running $1 million in expenditures on gas as either a commodity or industry, and the results are different, with the commodity output being $0.5 million for industry change, but only $0.2 million for the commodity change. Why would this be so? Is one of these options better than another? Thanks for any thoughts.
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