Difference between revisions of "SOCR EduMaterials Activities PowerTransformFamily Graphs"
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== This is activity demonstrates the usage, effects and properties of the modified power transformation family using graphs of scatter plots == | == This is activity demonstrates the usage, effects and properties of the modified power transformation family using graphs of scatter plots == | ||
| − | * '''Background''': The | + | * '''Background''': The '''power transformation family''' is often used for transforming data for the perpose of making it more Normal-like. The power transformation is defined by |
| + | <center><math>\[ y^{(\lambda)} = \left\{ \begin{array}{ll} | ||
| + | (y^{\lambda}-1)/\lambda & \mbox{if \lambda != 0$};\\ | ||
| + | \log(y) & \mbox{if \lambda = 0$}.\end{array} \right. \]</math> </center> | ||
Revision as of 21:14, 21 February 2007
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 defined by
- Exercise 1: ...
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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
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