The data
You have been given data from red maple and white oak trees from
a national forest dominated by mixed hardwood
stands. The following variables for each tree are
included
Variable
Description
treecode
Tree label
location
Eastern or western location in the forest
Species
Species codes (MR= red maple, OW=white oak)
Dbh
Diameter at breast height (1.3 m) in cm
Height
Height in m
treecode,location,species,dbh,height
1-W-7,eastern,MR,46.8,39.2
1-N-1,eastern,MR,47.1,37.4
1-E-4,eastern,MR,60.6,41.1
2-M-2,eastern,MR,50.1,26.9
3-E-4,eastern,MR,16.4,25.2
3-M-6,eastern,MR,29.4,27.3
3-S-4,eastern,MR,33.3,38
3-N-5,eastern,MR,37.4,22.5
3-N-6,eastern,MR,36.4,25
4-M-3,eastern,MR,7.2,3.9
4-M-2,eastern,MR,8,6.1
5-E-3,eastern,MR,19.6,14.5
7-N-5,eastern,MR,41.6,34.1
8-W-5,eastern,MR,31.7,31
8-S-7,eastern,MR,39.4,31.2...