Displaying 2 results from an estimated 2 matches for "version_3".
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version_1
2009 Aug 18
2
Odd results with Chi-square test. (Not an R problem, but general statistics, I think.)
...hether the increase is statistically significant. I used one-tailed chi
square tests for this.
Here's the data I got:
Test set 1:
total incorrect correct p
baseline 1908 1718 190
version_1 1908 1698 210 0,145
version_2 1908 1690 218 0,071
version_3 1908 1677 231 0,017
I compared every version with the baseline, so that I get something like a
2x2 contingency table, as here:
incorrect correct
baseline 1718 190
version_1 1698 210
p: 0,145
This works fine, the results seem to make sense...
2009 Aug 18
0
Odd results with Chi-square test. (Not an R problem, but general statistics, I think)
...00% sure you are meant to do that with p-values but I'll let someone else comment on that!.
total incorrect correct % correct
baseline 898 708 190 21.2%
version_1 898 688 210 23.4%
version_2 898 680 218 24.3%
version_3 1021 790 231 22.6%
>
> Here, the p value for version_3 (when compared with the baseline) seems to
> make no sense whatsoever. It shouldn't be larger that the other two p
> values, the increase in correct answers (that is what counts!) is bigger
> after all.
&g...