Bioequivalence and Bioavailability Forum

significant Shapiro-Wilk Test [General Sta­tis­tics]

posted by ElMaestro  – Denmark, 2017-07-30 23:27 (2455 d 08:51 ago) – Posting: # 17632
Views: 6,657

Hi Helmut,

❝ If you run two concurrent tests (one against the normal and the other one against the log-normal) you may end up with two nonsignificant results (as in slide 6) – which is contradictory.

The absence of a low p-value is not proof of the null being right. We can't prove which distribution the data follows but we can, so to say, test with some degree of power and with some alpha which distribution it doesn't follow.
What I am trying to say is I don't think it is contradictory to have two unrejected mutually exclusive null hypotheses.

Complete thread:

• Non Normal Shapiro-Wilk Test Mohamed Yehia 2017-07-29 20:47 [General Sta­tis­tics] 
  • Non Normal Shapiro-Wilk Test ElMaestro 2017-07-29 21:13
    • Non Normal Shapiro-Wilk Test Mohamed Yehia 2017-07-29 22:12
  • significant Shapiro-Wilk Test Helmut 2017-07-30 15:36
    • significant Shapiro-Wilk TestElMaestro 2017-07-30 21:27
      • significant Shapiro-Wilk Test Helmut 2017-07-31 12:52