|WikiProject Statistics||(Rated Start-class, High-importance)|
What exactly is the null hypothesis in the Wald Test? First para:"it tests whether an independent variable has a statistically significant relationship with a dependent variable."
Is it then testing the NH that X and Y are independent variables? If not, just say that. The way it is written is crap. I've changed it. —Preceding unsigned comment added by 220.127.116.11 (talk) 18:49, 24 July 2009 (UTC)
Need of Expansion?
IMO I think this article would benefit if it developed the Wald test in the way it is typically used i.e. as a test of whether some linear transformation of the parameter vector is equal to the zero vector, with perhaps an example and comments on how it is frequently used as a large-sample test - that is, the version of the test that is usually written in matrix notation. I would, but I'm not sure I'm qualified enough to do a reasonable job.--Theodds (talk) 17:41, 7 December 2010 (UTC)
Name of article
- It's usually referred to as a "Wald test" in statistical practice - at least in my discipline, which is medical statistics. --Pstevens (talk) 13:20, 18 April 2008 (UTC)
- It's "Wald's test" in my dictionary of statistics (Everitt). Melcombe (talk) 13:37, 18 April 2008 (UTC)
Thanks to the previous editor for improving the flow of the text. I've just changed the first section a little because the Wald test is not only for dichotomous variables . I've mentioned continuous variables specifically. I haven't (yet) put anything about categorical variables being handled via multiple dummy variables because the page doesn't yet describe the Wald test on multiple variables. I'll come back to this when I have more time.--Pstevens 11:48, 14 November 2006 (UTC)
Stating the hypothesis explicitly
I hope I haven't caused offence by reverting the edits by 18.104.22.168. In fact there are many hypotheses that can be tested by a Wald test, because it is a very general test procedure for parametric models. --Pstevens (talk) 13:37, 18 April 2008 (UTC)
Speaking of generality, it would be nice if there were some discussion of generalized (>1df) Wald tests.
I modified the Alternatives section to remove the reference to confidence intervals. You could construct confidence intervals based on either a Wald or LRT statistic, so the confidence interval is irrelevant. — Preceding unsigned comment added by 22.214.171.124 (talk) 18:09, 23 February 2013 (UTC)
References for the Talk Page
- Stata 9 reference manual (Volume [R]R-Z page 416), ISBN 1-881228-93-2 (I'll look for a better reference to use in the main article.)