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Definition of what is a market index is the goal of next week (using common indexes) - list of top indexes being used is desirable. Jeff Braswell: Also: what is the type of value actually measured in an index ? is it price, or interest rate, or economic statistic, etc?

From Dan Gillman:   

1.      Consumer Price Index (CPI) – This is a measure of the percentage change in prices as compared to some base starting point. The name CPI covers many indices for the US, and these include the entire US,  selected metro areas, and several goods and services. The indices are published as numbers, and the percent above or below the start value of 100 shows how much growth (or loss) in prices there has been since the start. Likewise, finding the percent change between 2 intermediate periods shows the growth over that interval. CPIs are not comparable against each other, though. If the CPI for apparel in Boston for Nov 2018 is 141.28 and that in Washington for the same time is 165.96, then this does not mean apparel is more expensive in Washington than in Boston. It only means the price has gone up faster in Washington from what it was at the base (beginning) period. The prices at the base period were not necessarily the same.

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6) For next week.

Proceedings:

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