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Price index
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==== Dutot index ==== By Nicolas Dutot (1738), a ratio of average prices:<ref>{{Cite web |title=The Life and Times of Nicolas Dutot |url=https://www.chicagofed.org/~/media/publications/working-papers/2009/wp2009-10-pdf}}</ref> : <math>P_{D} = \frac{\sum p_{t}}{\sum p_{0}}</math> Easy to compute, itβs sensitive to price scale (e.g., high-priced items dominate) and assumes equal item importance.<ref>PPI manual, 596.</ref>
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