Displaying 1 result from an estimated 1 matches for "ma080".
2010 Jan 11
3
Problem about Box-Cox transformation (topic in html form)
...data
http://n4.nabble.com/file/n1011015/start%2Bvalue%2Bproblem%2B02.jpeg
Note that the min of my data is -1099, so I add a fix value 1200 to the
original sample.
I choose the "box.cox.powers" function in package 'car'. Here is the result:
> box.cox.powers(na.exclude(c888.dl.ma080+1200))
Box-Cox Transformation to Normality
Est.Power Std.Err. Wald(Power=0) Wald(Power=1)
0.9526 0.0237 40.2638 -2.0036
L.R. test, power = 0: 2014.192 df = 1 p = 0
L.R. test, power = 1: 3.9807 df = 1 p = 0.046
Then I compared the result with original data, and it re...