From the chart (starting at the 1850s), we averaged the numbers of thousands barrels per day together of each decade and then multiplied by 365 to find the average per year of each decade. Aka, add numbers of each year together, divide by ten, and multiply by 365. We did this for each decade from 1850 to the 1990s, and for 2000s we averaged the years 2000-2007 and divided by 8 and multiplied y 365.
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1 comment:
seems like a good exercise to help absorb the idea from the book
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