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I'd like help interpreting how significant the findings are when χ2 (1) #s are given, as at I read Pearson's_chi-squared_test and couldn't thoroughly grok it. I get the gist, I think: χ2 (1) 32 is strong evidence, χ2 (1) = 9.4 is very weak evidence, but I'm not confident in my interpretation. I think I do understand pretty well what a p-value is and how to interpret it (e.g. p < 0.05 is a commonly used and often fairly-criticized-as-arbitrary threshold).
Would appreciate help interpreting how strong the findings are given the χ2 (1) #s in this study.
I think it would be good if Pearson's_chi-squared_test had more info on interpreting χ2 values - feels particularly warranted given the great detail it has on how to calculate χ2.
Thanks! (If I'm not mistaken the paper makes no attempt to adjust/correct for confounding factors, though it does try to identify and quantify some potential factors.) -- Elvey( t• c) 07:00, 12 October 2016 (UTC)
Let the following problem: (that is, all formulae that have as many satisfying assignments as unsatisfying assignments).
Is this problem NP-hard? — Preceding unsigned comment added by 31.154.81.30 ( talk) 17:44, 12 October 2016 (UTC)
And how about this: (that is, all formulae that have an even number of satisfying assignments). Is it NP-hard or coNP-hard? 31.154.81.30 ( talk) 07:19, 14 October 2016 (UTC)
Suppose we have the field of rational functions with complex coefficients , and we have a function . Can we define the derivative of with respect to ? I do not mean the derivation of differential algebra, I mean the derivative as defined by a quotient and taking the limit. As is a field, a quotient is well-defined, but it's not obvious to me how to take a limit.-- Leon ( talk) 18:44, 12 October 2016 (UTC)
Mathematics desk | ||
---|---|---|
< October 11 | << Sep | October | Nov >> | Current desk > |
Welcome to the Wikipedia Mathematics Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
I'd like help interpreting how significant the findings are when χ2 (1) #s are given, as at I read Pearson's_chi-squared_test and couldn't thoroughly grok it. I get the gist, I think: χ2 (1) 32 is strong evidence, χ2 (1) = 9.4 is very weak evidence, but I'm not confident in my interpretation. I think I do understand pretty well what a p-value is and how to interpret it (e.g. p < 0.05 is a commonly used and often fairly-criticized-as-arbitrary threshold).
Would appreciate help interpreting how strong the findings are given the χ2 (1) #s in this study.
I think it would be good if Pearson's_chi-squared_test had more info on interpreting χ2 values - feels particularly warranted given the great detail it has on how to calculate χ2.
Thanks! (If I'm not mistaken the paper makes no attempt to adjust/correct for confounding factors, though it does try to identify and quantify some potential factors.) -- Elvey( t• c) 07:00, 12 October 2016 (UTC)
Let the following problem: (that is, all formulae that have as many satisfying assignments as unsatisfying assignments).
Is this problem NP-hard? — Preceding unsigned comment added by 31.154.81.30 ( talk) 17:44, 12 October 2016 (UTC)
And how about this: (that is, all formulae that have an even number of satisfying assignments). Is it NP-hard or coNP-hard? 31.154.81.30 ( talk) 07:19, 14 October 2016 (UTC)
Suppose we have the field of rational functions with complex coefficients , and we have a function . Can we define the derivative of with respect to ? I do not mean the derivation of differential algebra, I mean the derivative as defined by a quotient and taking the limit. As is a field, a quotient is well-defined, but it's not obvious to me how to take a limit.-- Leon ( talk) 18:44, 12 October 2016 (UTC)