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help for ^a2^                                                   (STB-29: sg47)
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Anderson-Darling test
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    ^a2^ varlist [^if^ exp] [^in^ range] ^,^ ^di^st^(n^ormal|^u^niform|^c^hisquare^)^ [ ^df(^#^)^ ]


Description
-----------

^a2^ performs the Anderson-Darling distributional goodness-of-fit test for each
of the variables in varlist.


Options
-------

^dist(normal^|^uniform^|^chisquare)^ is not optional and defines the assumed dist-
    ribution to be tested.  Only the first letter of the name of the dist-
    ribution is required.

^df()^ is required for ^dist(chisquare)^ and specifies the degrees of freedom for
    the chi-square distribution.


Examples
--------

 . ^a2 mpg, dist(normal)^

 . ^set obs 200^
 . ^gen u = uniform()^
 . ^gen chi = invnorm(u)^^2^
 . ^a2 u, dist(uniform)^
 . ^a2 chi, dist(chisquare) df(1)^


Stored results
--------------

^a2^ stores in the ^$S_^# macros:

	^S_1^		number of observations
	^S_2^		Anderson-Darling A-squared statistic
	^S_3^		z (normal equivalent deviate) for A-squared
	^S_4^		P (upper tail P-value) for A-squared


Author
------

        Patrick Royston
        Royal Postgraduate Medical School, London
        FAX:  (011)-44-181-740-3119


Also see
--------

    STB:  STB-29  sg47
On-line:  help for @swilk@, @qchi@.