Displaying 1 result from an estimated 1 matches for "2bvalue".
Did you mean:
bvalue
2010 Jan 11
3
Problem about Box-Cox transformation (topic in html form)
Hi:
Recently, I want to perform a transformation on my data to make it more
normal, meanwhile the order statistics is unchanged. So I decided to use a
box-cox transformation.
below is the qq-plot of the original 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
Es...