THE BOOK--Playing The Percentages In Baseball

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Thursday, May 05, 2011

Play-Index expanded

By Tangotiger, 03:13 PM

Sean has expanded his Play-Index to use the weather parameters as noted in Retrosheet.

http://www.bbref.com/about/coverage.shtml

Weather Data

The weather data is based on conditions at the start of the game. Below we show the percentage of each data set (temp, wind speed & dir, etc) which are not null (or unknown). This data is included in the RetroSheet data files and is provided as is and most certainly contains some errors. There is no weather data pre-1950.

For example, these are HR hits in 2010-2011 where the temperature (using your father’s scale) of at least 95 degrees (35 in the worldwide scale).

(8) Comments • 2011/05/06 • Sabermetrics • Parks

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THE BOOK--Playing The Percentages In Baseball

Thursday, May 05, 2011

Play-Index expanded

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