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Help with displaying chi square results/data? watch

1. Hey folks, so I'm pretty rubbish at stats and although I believe I've worked it out correctly, I don't know what the actual format is when it comes to writing down my results?

So I've got 2 categories, which gives me 1 degree of freedom I think.

I'll call them categories A & B. I'm getting results then saying what category they go in.

So from data before my comparison I had 14 results, I got A=1 and B=13. So I've got a 1:13 ratio. With my new data I got 36 results, with the null hypothesis saying the ratio is going to be roughly the same, I'd be expecting 2-3:33. I've stated the expectation of 3:33.

My results were way different, with the 36 results being split into A=14, B=22.

Now I know for chi square you're not meant to have expected frequencies under 5, where as I have 3. I'm using Yates's correction for continuity to help with that, though in this example it makes little difference.

So doing this I get X2=40.091. Which means P<0.001.

So when writing in my results section on the chi square test, would I just say something along the lines of...

"The difference in ratios is significant, X2=40.091, p < 0.001, thus the null hypothesis is rejected."

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Updated: March 31, 2013
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