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The statistics are a little bit off - the Chi-squared isn't appropriate for the example he gives (sample size too small), although it would be fine in practice.
by hadley 17y ago
The statistics are a little bit off - the Chi-squared isn't appropriate for the example he gives (sample size too small), although it would be fine in practice. What you really want in that situation is the exact binomial test.
- smartbear 17y agoGood point! Although with around N > 25 you're OK. See: http://faculty.chass.ncsu.edu/garson/PA765/binomial.htm http://faculty.chass.ncsu.edu/garson/PA765/binomial.htm