Box Cox Transformation Adalah. Penelitian ini menggunakan teladan penerapan yang diperoleh dari buku neter 1994 dan juga situs internet. The box cox transform y y 1 has been widely used in applied data analysis box and cox 1964 developed the transformation and argued that the transformation could make the residuals more closely normal and less heteroskedastic.
Jurnal matematika dan komputer vol. This assumption allows us to construct confidence intervals and conduct hypothesis tests. The basic idea behind this method is to find some value for λ such that the transformed data is as close to normally distributed as possible using the following formula.
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Box cox mempertimbangkan kelas transformasi berparameter tunggal yaitu lamda yang dipangkatkan pada variabel respon y. If the lambda argument is omitted then the transformation which best normalizes the data in r1 is used based on maximizing the log likelihood function. Boxcoxll r1 λ log likelihood function of the box cox transformation of the data in r1 using the given lambda value. 3 8 17 desember 2004 issn.
