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Data on growth of sea urchins.
data(urchin.growth)
A data frame with 250 observations on the following 2 variables.
Estimated age of sea urchin
Measurement of size
Data is sampled from a data set that accompanies the thesis of P. Grosjean.
# NOT RUN { data(urchin.growth) plot(jitter(size) ~ jitter(age), data=urchin.growth) # }
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