Conservationists have despaired over destruction of tropical
rain forest by logging, clearing, and burning. These words begin a
report on a statistical study of the effects of logging in Borneo.
Here are data on the number of tree species in 12 unlogged forest
plots and 9 similar plots logged 8 years earlier:
Unlogged: 22, 18, 22, 20, 15, 21, 13, 13, 19, 13, 19, 15
Logged: 17, 4, 18, 14, 18, 15, 15, 10, 12
Does logging significantly reduce the...