Sitka {MASS} | R Documentation |
The Sitka
data frame has 395 rows and 4 columns. It gives repeated
measurements on the log-size of 79 Sitka spruce trees, 54 of which
were grown in ozone-enriched chambers and 25 were controls. The size
was measured five times in 1988, at roughly monthly intervals.
Sitka
This data frame contains the following columns:
size
Time
tree
treat
"ozone"
for an ozone-enriched chamber or "control"
P. J. Diggle, K.-Y. Liang and S. L. Zeger (1994) Analysis of Longitudinal Data. Clarendon Press, Oxford
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.