fir data frame has 50 rows and 3 columns.
The number of balsam-fir seedlings in each quadrant of a grid of 50 five foot square quadrants were counted. The grid consisted of 5 rows of 10 quadrants in each row.
This data frame contains the following columns:
The number of seedlings in the quadrant.
The row number of the quadrant.
The quadrant number within the row.
Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.