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Cloud seeding

Clouds were randomly seeded or not with silver nitrate. Rainfall amounts were recorded from the clouds. The purpose of the experiment was to determine if cloud seeding increases rainfall.


  1. Unseeded: Amount of rainfall from unseeded clouds (in acre-feet).
  2. Seeded: Amount of rainfall from seeded clouds with silver nitrate (in acre-feet).


Simpson, Alsen, and Eden. (1975). ``A Bayesian analysis of a multiplicative treatment effect in weather modification.'' Technometrics 17, 161-166.

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