SOCR EduMaterials Activities PowerTransformFamily Graphs
From Socr
SOCR Educational Materials - Activities - SOCR Power Transformation Family Graphing Activity
This is activity demonstrates the usage, effects and properties of the modified power transformation family using graphs of scatter plots
- Background: The power transformation family is often used for transforming data for the perpose of making it more Normal-like. The power transformation is continuously varying with respect to the power parameter λ and defined for all y > 0 by:
![y^{(\lambda)} = \left \{ {(y^{\lambda}-1)} / {\lambda}, if \lambda \neq 0; and \log{y}, if \lambda = 0 \right\}](/socr/uploads/math/7/0/2/7021ce6f6dea25e6709488cc8b135951.png)
- Exercise 1: TBD
![](/socr/uploads/thumb/2/2c/SOCR_Activities_CardCoinSampling_Dinov_092206_Fig7.jpg/300px-SOCR_Activities_CardCoinSampling_Dinov_092206_Fig7.jpg)
References
- Carroll, RJ and Ruppert, D. On prediction and the power transformation family. Biometrika 68: 609-615.
- SOCR Home page: http://www.socr.ucla.edu
Translate this page: