The data give the ratio of "forehead" breadth to body length for 1000 crabs sampled at Naples by Professor W.F.R. Weldon.
pearson data frame has 29 rows and 2 columns.
This data frame contains the following columns:
the boundaries of grouping intervals.
the frequencies of observation falling into each interval.
Pearson, K. (1894). Contributions to the mathematical theory of evolution. Phil. Trans. Roy. Soc. London A 185, 71-110.
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