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[ODP] Immigrant GPA in Danish primary school is predictable from country-level variab

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Quote: First, you say that p goes down only if the variable is not normally distributed. Then, you say it can go down if N is large (and you show it in your blog post). So, it's not "only if" the variabe is not normal. That's the problem I always pointed out.

You have not read carefully enough. I said that it goes down when both of two conditions are met: 1) there is nonnormality in the data, 2) N is large. Condition (2) is not sufficient in itself, as I clearly showed by simulation.

Quote:But of course, you can't see that with your S-W test. That's why I prefer histogram. S-W test cannot even tell anything about skewness and kurtosis. But histogram can do that. When you look only at S-W test, you will come to the conclusion that the data is not normal, and that Pearson's test is not appropriate. Correct. But when it comes to choose the best method, S-W fails badly. It cannot show you which method to apply.

SW is not a tests of whether Spearman's method is the right. It is a test of normality. You wouldn't criticize IQ tests for not measuring height either.

Quote:S-W test cannot even tell anything about skewness and kurtosis.

Same as above. Just use describe() for that. Skew is -.3 and kurtosis is -1.39.

Quote: For your article anyway, I will only ask that you note the data is not normally distributed, as indicated by histogram (and S-W test if you really want it) and then show that Spearman's correlation produces the same result. And I will approve. I don't think the analysis needs to be carried out even further. And I don't even have ideas. Pearson/Spearman is just sufficient.

I will update it with a histogram + Spearman's results later today. :)
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Messages In This Thread
[ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-02, 00:49:54
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-02, 03:13:04
Normality - by Emil - 2014-Nov-02, 05:37:41
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-02, 19:21:44
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-02, 19:32:02
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-02, 20:15:44
Shapiro test - by Emil - 2014-Nov-02, 22:39:48
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-03, 19:29:29
Spearman - by Emil - 2014-Nov-03, 04:17:20
Nonnormal - by Emil - 2014-Nov-03, 22:59:31
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-06, 01:32:32
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-06, 01:48:01
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-06, 02:46:26
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-06, 02:59:02
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-06, 03:57:07
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-06, 20:48:41
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-07, 02:31:06
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Nov-07, 20:24:16
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-09, 04:19:00
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-26, 19:38:54
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2014-Dec-30, 00:35:58
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-Jan-12, 22:12:58
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Jan-14, 14:28:28
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-Jan-25, 01:51:01
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Nov-27, 23:31:16
I have updated the paper to draft #4 - by Emil - 2014-Nov-29, 08:20:32
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2014-Dec-05, 01:19:52
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Dec-05, 10:54:41
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2014-Dec-27, 05:57:01
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Meng Hu - 2015-Jan-05, 19:33:18
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Peter Frost - 2014-Dec-30, 23:31:30
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Jan-14, 15:00:45
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Jan-13, 00:13:23
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Jan-25, 02:43:12
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Feb-02, 16:58:19
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-Feb-02, 19:21:15
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Feb-02, 20:34:14
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-Feb-02, 21:12:06
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Feb-03, 03:48:24
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Feb-05, 17:14:10
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-Feb-08, 03:52:29
Reply to John's #41 - by Emil - 2015-Feb-09, 04:15:15
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-Feb-11, 04:26:03
Draft #6 - by Emil - 2015-Feb-17, 05:04:22
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-Mar-12, 22:05:36
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Mar-13, 00:50:20
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Peter Frost - 2015-May-24, 18:13:12
Reply to Peter #47 - by Emil - 2015-May-26, 07:56:34
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Peter Frost - 2015-May-26, 18:42:03
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-May-26, 23:00:21
RE: [ODP] Immigrant GPA in Danish primary school - by Meng Hu - 2015-May-28, 08:32:30
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-May-28, 23:16:31
Reply to MH #51 - by Emil - 2015-May-28, 10:09:59
RE: [ODP] Immigrant GPA in Danish primary school - by Meng Hu - 2015-May-28, 17:34:38
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-May-28, 23:25:35
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Chuck - 2015-May-30, 19:52:15
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Jun-04, 14:36:24
RE: [ODP] Immigrant GPA in Danish primary school is predictable from country-level variab - by Emil - 2015-Jun-04, 18:15:24
 
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