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A subset of the aggregated death rate data from Snow's legendary study of the source of the London Cholera outbreak.
snow
A data frame with 4 rows and 4 variables
Year
Water pump supplier
Status of water pump
Deaths per 10k 1851 population
This data is used in the Difference-in-Differences chapter of The Effect by Huntington-Klein.
Huntington-Klein. 2021. The Effect: An Introduction to Research Design and Causality. https://theeffectbook.net.