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Words:
[elasticity](https://en.wikipedia.org/wiki/Elasticity_of_a_function)
Data:
[ORATS Smoothed Options Market Quotes](https://www.quandl.com/databases/OSMV/documentation)
[quandl put options](https://www.google.com/search?channel=tus2&client=firefox-b-1-d&q=QUANDL+put+option+price)