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  • $\begingroup$ "an example in a textbook" - can you mention which textbook, please? $\endgroup$ Commented Nov 13, 2017 at 4:56
  • $\begingroup$ @J.M. The textbook is in Chinese. If necessary, I could translate it. $\endgroup$ Commented Nov 13, 2017 at 4:58
  • $\begingroup$ Hmm... did the textbook at least mention what software they were using that generated those results? $\endgroup$ Commented Nov 13, 2017 at 4:59
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    $\begingroup$ @J.M. The software used in the textbook is SPSS. $\endgroup$ Commented Nov 13, 2017 at 5:03
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    $\begingroup$ I don't have access to SPSS at the moment, but indeed I am getting conflicting results from Mathematica and the webpage you linked to. Let me check further... $\endgroup$ Commented Nov 13, 2017 at 5:16