April 7, 2015
Analysis
Ben Wellington, who runs the excellent I Quant New York did a nice job here unpacking NYC taxi charge data and found that two different systems installed in taxis calculate driver tips differently. And he estimates the more generous (?) system produces $5.2 million in tips above what the other system provides. Of course, riders have been […]
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March 21, 2011
Economics
Too much of economics is pure theory with no data. Take a look at James Hamilton’s commentary at Econobrowser on a paper by Chevalier and Kashyap. The authors actually used grocery store price data. What variability is hidden behind national economic data?
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