stumps: Larvae on Stumps

Description Format Source

Description

Biologists were interested in whether beetles prefer areas where beavers have cut down cottonwood trees. (The tree-stumps produce tender green shoots that beetles are thought to like.) 23 circular plots, all of equal area, were studied. For each plot the researchers counted the number of cottonwood stumps, and also the number of clusters of beetle larvae found in the plot.

Format

A data frame with 23 observations on the following 2 variables.

stumps

number of stumps in the plot

larvae

number of larvae clusters in the plot

Source

Basic Practice of Statistics, by Moore and McCabe.


homerhanumat/tigerstats documentation built on Sept. 27, 2020, 3:21 a.m.