| Box-Cox Normality Plot | |
| # observations x | 13 |
| maximum correlation | 0.985353792435655 |
| optimal lambda | -0.36 |
| transformation formula | for all lambda <> 0 : T(Y) = (Y^lambda - 1) / lambda |
| Obs. | Original | Transformed |
| 1 | 11.24438088 | 1.61536412565273 |
| 2 | 17.66485036 | 1.78982107371322 |
| 3 | 15.18527714 | 1.73453516258741 |
| 4 | 25.30595776 | 1.90974265351736 |
| 5 | 24.00168259 | 1.89304831223488 |
| 6 | 94.14444444 | 2.23685980924587 |
| 7 | 43.37222 | 2.06278557696792 |
| 8 | 58.35 | 2.13520430974151 |
| 9 | 50.15652 | 2.09923124363076 |
| 10 | 17.17381 | 1.7797433935114 |
| 11 | 29.275 | 1.95409760140131 |
| 12 | 18.62142857 | 1.80840053296032 |
| 13 | 50.77307692 | 2.10220919380743 |
| Maximum Likelihood Estimation of Lambda |
> summary(mypT)
bcPower Transformation to Normality
Est Power Rounded Pwr Wald Lwr Bnd Wald Upr Bnd
x -0.2896 0 -1.2577 0.6784
Likelihood ratio test that transformation parameter is equal to 0
(log transformation)
LRT df pval
LR test, lambda = (0) 0.3482057 1 0.55513
Likelihood ratio test that no transformation is needed
LRT df pval
LR test, lambda = (1) 7.041686 1 0.0079634
|
