Growth Curves for Sitka Spruce Trees in 1989

Arguments

size measured size (height times diameter squared) of tree, on log scale.
Time time of measurement in days since 1 January 1988
tree number of tree
treat either "ozone" for an ozone-enriched chamber or "control"

SUMMARY

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.

DATA DESCRIPTION

This data frame contains the following columns:

SOURCE

P. J. Diggle, K.-Y. Liang and S. L. Zeger (1994) Analysis of Longitudinal Data. Clarendon Press, Oxford

See Also

Sitka


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