Difference between revisions of "User:Regina"

Revision as of 22:15, 26 October 2008

Reduced accuracy for r->0

Needs log1p for improvement

1/2*log((1+r)/(1-r)) = 1/2*log(1+2*r/(1-r)) = 1/2* log1p(2r/(1-p))

or

1/2*(log(1+r)-log(1-r)) = 1/2*( log1p(r)-log1p(-r))

Have to test this.

Same problem in FISHERINV with

(exp(2r)-1)/(exp(2r)+1)

Test Wiki-markup here

$\text{[math]}$

Revision as of 23:29, 25 October 2008 (view source) Regina (Talk \| contribs) (→‎Sandbox) ← Older edit		Revision as of 22:15, 26 October 2008 (view source) Regina (Talk \| contribs) (→‎Sandbox) Newer edit →
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	<math> s_{X_1 - X_2}</math>		<math> s_{X_1 - X_2}</math>
		+
		+	<math>1-P( -\|z\| \le Z \le \|z\|)</math>