kartickdey
KarishmaB,
bb,
Sajjad1994Regarding third part of Q1...
I have one query how I can know that there is a 5% increase in the amount of consumption of grain of barras from 600AD to 700AD...in the second tab, the percentage value of the items is given ....so it is basically relative..there may not be actual change in the amount of one item..for example the 5% increase in foodgrain from 600AD to 700AD might not be becuase of any actual increase in the consumption of food grain..rather it might be because of decrease in "other"...Please explain
Percentages alone (Food Variety, tab 2) cannot tell you whether grain increased in pounds. You are right about that. So to test the 5% rule for grain, you must combine tab 2 percentages with tab 3 pounds to convert grain into pounds, then compare across centuries.

But we are not using tab 2 alone. Food Consumption (tab 3) gives actual pounds of seafood, and seafood pounds increase from the 600s to the 700s. Since tab 2 shows seafood stays the same percentage of the diet across those centuries, higher seafood pounds means the total amount of food consumed also increased. With a higher total and a higher grain percentage, grain in pounds must increase too.
So you cannot dismiss the grain increase as “just Other decreased.” You must anchor with tab 3, convert grain from tab 2 into pounds, and compare.

Hope it helps.
P.S. This question has already been addressed
earlier in this thread. Please review the prior posts before posting.
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