TY - JOUR
T1 - Optimal power transformation via inverse response plots
AU - Lindsey, Charles
AU - Sheather, Simon
PY - 2010
Y1 - 2010
N2 - We present a new Stata command, irp, that generates the inverse response plot (Cook and Weisberg, 1994, Biometrika 81: 731-737) of a response on its predictors. Using the inverse response plot, an appropriate scaled power transformation for the positive response variable can be found so that the transformed response mean is linear in the predictors. The optimal transformation is displayed in the plot, as are user-specified guesses. By using the graphical display, the user may determine whether an appropriate transformation exists as well as determine its value. We demonstrate the irp command using both a generated and a real example
AB - We present a new Stata command, irp, that generates the inverse response plot (Cook and Weisberg, 1994, Biometrika 81: 731-737) of a response on its predictors. Using the inverse response plot, an appropriate scaled power transformation for the positive response variable can be found so that the transformed response mean is linear in the predictors. The optimal transformation is displayed in the plot, as are user-specified guesses. By using the graphical display, the user may determine whether an appropriate transformation exists as well as determine its value. We demonstrate the irp command using both a generated and a real example
KW - Irp
KW - Regress
KW - Scaled power transformation
KW - St0188
UR - http://www.scopus.com/inward/record.url?scp=77955046659&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955046659&partnerID=8YFLogxK
U2 - 10.1177/1536867x1001000202
DO - 10.1177/1536867x1001000202
M3 - Article
AN - SCOPUS:77955046659
SN - 1536-867X
VL - 10
SP - 200
EP - 214
JO - Stata Journal
JF - Stata Journal
IS - 2
ER -