The mesquite bushes yields dataset from Gelman and Hill (2006) (http://www.stat.columbia.edu/~gelman/arm/).

mesquite

Format

The response variable is the total weight (in grams) of photosynthetic material as derived from actual harvesting of the bush. The predictor variables are:

diam1

diameter of the canopy (the leafy area of the bush) in meters, measured along the longer axis of the bush.

diam2

canopy diameter measured along the shorter axis.

canopy height

height of the canopy.

total height

total height of the bush.

density

plant unit density (# of primary stems per plant unit).

group

group of measurements (0 for the first group, 1 for the second group).

References

Gelman, Andrew, and Jennifer Hill. 2006. Data Analysis Using Regression and Multilevel/Hierarchical Models. Cambridge, UK: Cambridge University Press. doi:10.1017/CBO9780511790942 .