Sitka89
From MASS v7.3-25
by Brian Ripley
Growth Curves for Sitka Spruce Trees in 1989
The Sitka89
data frame has 632 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 eight times in 1989, at roughly monthly intervals.
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Usage
Sitka89
source
P. J. Diggle, K.-Y. Liang and S. L. Zeger (1994) Analysis of Longitudinal Data. Clarendon Press, Oxford
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