Description Usage Format Source References Examples
Does dropping silver iodide onto clouds increase the amount of rainfall they produce? In a randomized experiment, researchers measured the volume of rainfall in a target area (in acre-feet) on 26 suitable days in which the clouds were seeded and on 26 suitble days in which the clouds were not seeded.
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A data frame with 52 observations on the following 2 variables.
Rainfall
the volume of rainfall in the target area (in acre-feet)
Treatment
a factor with levels "Unseeded"
and
"Seeded"
indicating whether the clouds were unseeded or seeded.
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
Simpson, J., Olsen, A., and Eden, J. (1975). A Bayesian Analysis of a Multiplicative Treatment Effect in Weather Modification. Technometrics 17: 161–166.
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