mignonette: Darwin's Wild Mignonette Data
In jhmaindonald/DAAG: Data Analysis and Graphics Data and Functions

Description Usage Format Source Examples

Data compare the heights of crossed plants with self-fertilized plants of the wild mignonette reseda lutea. Plants were paired within the pots in which they were grown, with one on one side and one on the other.

1	mignonette

This data frame contains the following columns:

cross: heights of the crossed plants
self: heights of the self-fertilized plants

Darwin, Charles. 1877. The Effects of Cross and Self Fertilisation in the Vegetable Kingdom. Appleton and Company, New York, page 118.

print("Is Pairing Helpful? - Example 4.3.1")

attach(mignonette)
plot(cross ~ self, pch=rep(c(4,1), c(3,12))); abline(0,1) 
abline(mean(cross-self), 1, lty=2)
detach(mignonette)