354 – Contributed Oral Poster Presentations: Section on Statistical Computing
Comparison of Population Means for Skewed Data with Unequal Variance
Evren Özkip,
Bursa Police College
Betul Kan
Anadolu University
Ahmet Sezer
Anadolu University
Berna Yazici
Anadolu University
In many fields, data has skewed distribution. That is true especially when the interested variable takes only positive values with a small mean value but a large variance value. To overcome these problems one possible solution is to work with the log-transformed data.In this study we focus on comparing two population means for this kind of data when the populations have unequal variances. We consider 3 possible solutions: Modified Likelihood ratio test, bootstrap based test and generalized p value approach. A simulation study is conducted using small to moderate sample sizes to assess the type I error rates and powers.
