A data set discussed in Hollander and Wolfe (1999) and Exercise 5.8.9 of Kloke and McKean (2014). It contains part of a study on the effects of cloud seeding of cyclones.

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Twenty-one observations on three variables.

`trt`

treatment indicator (1) is Seeded and (2) is control

`M`

predictor M, the geostrophic meridional circulation index

`RI`

measure of precipitation

Hollander, M. and Wolfe, D.A. (1999), *Nonparametric Statistical Methods*, New York: Wiley.

Kloke, J. and McKean, J.W. (2014), *Nonparametric statistical methods using R*, Boca Raton, FL: Chapman-Hall.

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