Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Hypothesis testing, why alpha cannot be zero

  1. Jul 24, 2011 #1
    Ok someone tell me the official explanation of why alpha cannot be zero in hypothesis testing.
     
  2. jcsd
  3. Jul 24, 2011 #2
    The UNOFFICIAL explanation (I don't know who could give you the "official" explanation) is that, if you set alpha to zero, you will always accept your null hypothesis, and thus hypothesis testing would be pointless.

    Think about it. Testing at P < 0 means that you will call significant only a result that has probability less than 0 of happening if the null hypothesis is true. Obviously, there is never such a result.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Hypothesis testing, why alpha cannot be zero
  1. Hypothesis test (Replies: 5)

  2. Hypothesis tests (Replies: 3)

  3. Hypothesis testing (Replies: 0)

  4. Hypothesis Testing (Replies: 3)

Loading...