(42S) Weibull UTPW
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12-03-2014, 10:19 AM
(This post was last modified: 06-15-2017 01:51 PM by Gene.)
Post: #1
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(42S) Weibull UTPW
Weibull distribution is referenced with various parameters, the form I prefer is
(B/A)*((X-G)^(B-1))*e^(((X-G)^B)/A) A, B & G customarily read as alpha, beta & gamma. Happily the integral with respect to X has a closed form e^-((e^(B*LN(X-G)))/A) 0. { 35-Byte Prgm } 1. †LBL "W¨P" 2. X<>Y 3. - 4. LN 5. × 6. E^X 7. X<>Y 8. ÷ 9. +/- 10. E^X 11. RTN 12. †LBL "P¨W" 13. LN 14. +/- 15. RCL× ST T 16. LN 17. RCL÷ ST Z 18. E^X 19. + 20. END Eg 7, 8, 11, .01 P¨W returns 12.5436 Eg 7, 8, 11, 12.5 W¨P returns 0.0257 |
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