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| visits | member for | 1 year, 5 months |
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| stats | profile views | 119 |
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May 23 |
awarded | Famous Question |
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Dec 21 |
awarded | Yearling |
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Dec 17 |
awarded | Notable Question |
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Oct 18 |
comment |
Test data for randomness with repetitions What are the choices A and B? Do they have meaning? Is choice A the same for all questions? If so, to test the null hypothesis that the the probabilities of choosing A and B are equal, you might just get the percent A responses for each person and then do a z test to see if the mean is significantly different from .5. |
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Oct 16 |
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Test data for randomness with repetitions Are you interested in testing the null hypothesis that the the probabilities of choosing A and B are equal? |
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Oct 15 |
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Test data for randomness with repetitions What test would you use if †he questions are independent? Can you test to see if the answers to the multiple questions are correlated? If they are not correlated, then you might proceed as you describe. BTW, do you have any theoretical or other reason to help you predict the proportion of participants who will chose option A rather than option B (assuming we call your two options A and B)? |
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Oct 15 |
comment |
Fisher's exact test for results of Wilcoxon-Mann-Whitney If you have a reason for not wanting to use average before and after scores, what is that reason? Do you think you will get more power by using a Fisher Exact Test to detect higher rate of significant multiple Mann-Whitney tests? I think it is likely that such a two stage approach has lower power than just doing a t-test on the before and after averages. In any case, if you want to "use all the data" have you considered doing an AVOVA with subjects as blocks? |
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Oct 15 |
comment |
Fisher's exact test for results of Wilcoxon-Mann-Whitney What are you hoping to learn with that approach? What is your research question? |
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Oct 15 |
answered | Fisher's exact test for results of Wilcoxon-Mann-Whitney |
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Oct 14 |
comment |
Fisher's exact test for results of Wilcoxon-Mann-Whitney Can you tell us more about your research design? Is the following example more or less what you are doing? You have two groups, say men and women. You have two types of data for the men, say height and weight. You have the same two types of data for the women. You want to know which are heavier, men or women. You also want to know which are taller, men or women. Or is your design something different? |
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Oct 14 |
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Fisher's exact test for results of Wilcoxon-Mann-Whitney Perhaps adding some more details and context would make this question clearer. For example, do you have repeated measures on each subject? How many Mann-Whitney tests did you do? |
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Oct 10 |
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Distribution of $R^2$ for pairs of random variables Are you asking what the sampling distribution for r would look like if X and Y are uncorrelated? Or are you interested in the sampling distribution of r if the population correlation is some know, non-zero value? |
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Oct 7 |
answered | Exercise in testing a difference of means |
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Oct 4 |
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Conflicting Answers from Marketing Test: Both Answers are Statistically Significant Perhaps you might tell us a bit more about your situation. For example, do you think the hits are all or mostly first time hits or do you think most or many of the hits are repeat hits? Is there any logical relationship between the pages A, B and C? For example, is there any reason to visit page B after you digest the information in page A or C? Are the pages linked? For example, can you get from page A to B or to C? |
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Sep 28 |
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What are some non-uniform random number generators not relying on uniform random number generators? What non-normal, non-uniform distribution(s) are you interested in? |
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Sep 27 |
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What are some non-uniform random number generators not relying on uniform random number generators? What is it that you need that you cannot get from a uniform random number generator? You can always do transformations (as this site does to get a normal distribution from a uniform distribution: random.org ). What do you mean by a "general non-uniform distribution"? |
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Sep 27 |
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Poker winrate statistical test If you have only 2 players, it would seem that the win rate based on chance alone should be .5. That can be tested with a z-test. |
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Sep 27 |
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Appropriate analysis for daily measurements Chat sounds ok. I've not used it and do not know how to set up a chat. If you know, let me know when you would like to chat. My schedule is open today and tomorrow, then cluttered for a week. |
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Sep 27 |
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How to derive a formula from experimental values? Your situation is becoming clearer, slowly. Based on what you said, let me ask again: (1) Have you tried using all 4 V predictors? (2) Are you saying that V4 is a categorical variable and that is why you do not want include it as a predictor together with V1, V2 and V3 in a multiple regression analysis? |
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Sep 27 |
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Appropriate analysis for daily measurements As to the third part to your question, what do you mean when you say you want to use "some combination of sensor derived parameters and" reference "these to baseline ... pre-trial clinical assessment ... and a daily health questionaire." What is the goal of this third part? |
