| Wafer {nlme} | R Documentation | 
The Wafer data frame has 400 rows and 4 columns.
This data frame contains the following columns:
a factor with levels
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
a factor with levels
1 
2 
3 
4 
5 
6 
7 
8 
a numeric vector
a numeric vector
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York.