Re: large N, categorical outcomes, significance?

2001-08-19 Thread Rich Ulrich
On 17 Aug 2001 10:14:04 -0700, [EMAIL PROTECTED] (JDriscoll) wrote: I have a large dataset (N can be 2,000-9,000) with mostly categorical outcome variables. Any chi square is significant with residuals of 100+ for tiny differences. I know one can determine effect size for continuous

Re: large N, categorical outcomes, significance?

2001-08-18 Thread Donald Burrill
One approach: (I assume that by residual you mean (O-E)/sqrt(E) for each cell of a two-way frequency table, where O=observed frequency and E=expected frequency under the null hypothesis). For the several (or the single) largest residual(s), report O and E as proportions (of total N).