Interpreting SAM accounts

Hi, I have what may be a simple question, but I can not seem to find a satisfactory description from the Miller, Blair book or IMPLAN Pro 2.0 manual. See attached image. I'm trying to devise a logical explanation of the difference between the [i]Sales[/i] entries in the commodities column and the [i]Consumption[/i] entries in the commodities row. So to that extent, how do the two entries differ? Any thoughts will be greatly appreciated. Steve [attachment=419]Picture2.jpg[/attachment]
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  • Hello Steven, As a general rule the SAM can be read as columns making payments to rows. Thus the Commodity column: Institution row would represent sales of commodities from institutions. Whereas, the Institutions column: Commodity row and Capital column: Commodity row would represent institutional payments for commodities (consumption by institutions) and payments of capital to commodities. If you are interested in seeing these on a per commodity basis you can do this using the Explore> Social Accounts> Balance Sheet (Tab), and select View By: Commodity Balance Sheet and the Industry-Institutional Production and Institution Demand tabs. Please let us know if you have any additional questions.
  • Thanks! I don't know why I had a mental block keeping me from that conclusion.
  • Okay, Now I know the source of my mental block. Using, as you suggested the Explore> Social Accounts> Balance Sheet (Tab)> View By: Commodity Balance Sheet and selecting Industry Demand, IMPLAN provides Gross Demand estimates by institutions. I read this has institutional demand for commodities and the numbers IMPLAN provides for MI seem consistent with this interpretation. The entries of the detailed SAM reproduce these entries in the Sales submatrix circled in my attachment. That would mean that these entries are institutional sales of these commodities by your description. That is each entry by column is payments of commodities to institutions. Commodity demand is more consistent with institutional payments to commodities, which corresponds with the consumption sub-matrices. When I look at the consumption entries (second circled area) of the detailed SAM, the entries are mostly zero, indicating no institutional demand. Hence, I'm still not clear on the interpretations. Many thanks, Steve
  • Hi Steven, Could you please attach your spreadsheet so we can take a look? If it does not attach, please email to Thanks!
  • Hi Steve, We definitely agree that your spreadsheet does not show household demand for commodities; however, when we export and pivot the 2009 MI SAM, we do see household demand for commodities, as expected (see attached). Please try re-exporting and pivoting your SAM. Here is a video on pivoting that might be useful: Please let us know if you have any further questions.

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