Difference between revisions of "User:Regina"
From Apache OpenOffice Wiki
(→Sandbox) |
(→FISHER) |
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[[/MyDrafts]] | [[/MyDrafts]] | ||
− | === FISHER === | + | === FISHER and FISHERINV=== |
Reduced accuracy for r->0 | Reduced accuracy for r->0 | ||
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1/2*log((1+r)/(1-r)) = 1/2*log(1+2*r/(1-r)) = 1/2* log1p(2r/(1-p)) | 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. | Have to test this. | ||
+ | |||
+ | Same problem in FISHERINV with | ||
+ | |||
+ | (exp(2r)-1)/(exp(2r)+1) | ||
== Sandbox == | == Sandbox == | ||
Test Wiki-markup here | Test Wiki-markup here |
Revision as of 20:38, 10 October 2008
- native language
- German
- active in project
- de, qa. sc
- OOo user name
- regina
- special interest
- www.ooowiki.de
ToDo
Planning Wiki-Pages
FISHER and FISHERINV
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)
Sandbox
Test Wiki-markup here