Correlation coefficients with significance levels
-------------------------------------------------
by Sean Becketti, Federal Reserve Bank of Kansas City

        ^corrprob^ varname1 varname2 [^in^ range] [^if^ exp] [^,^ type]

where type is one of:

	^all^           all correlation measures 
	^pearson^       Pearson's product-moment correlation
	^spearman^      Spearman's rank correlation
	^kendall^       Kendall's tau-beta

displays one or more correlation coefficients between varname1 and varname2
along with a normal-approximation to the test that the rank correlation is
zero.  If no type is specified, then ^pearson^ is assumed.

Warning:  Calculation of Kendall's tau-beta is slow, especially on 
          large data sets.