Can’t see the video?Click hereto watch it on YouTube. Running the Test At the core of the Box Cox transformation is an exponent, lambda (λ), which varies from -5 to 5. All values of λ are considered and the optimal value for your data is selected; The “optimal value” is th...
Find more tutorials on the SAS Users YouTube channel. Related topics Hackateers - Assay performance analysis for everybody Customer Churn Analysis How Correlation Relates to Linear Regression and Factor Analysis Pharmalyze - Survival Analysis for Prostate Cancer power analysis for N...
Minitab: click theOptionsbox (for example, while fitting aregression model) and then click Box-Cox Transformations/Optimal λ. Common Box-Cox Transformations **Note: the transformation for zero is log(0), otherwise all data would transform to Y0= 1. The transformation doesn’t always work wel...
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more. Find more tutorials on the SAS Users YouTube channel. Discussion stats 3 replies 06-06-20...
I have performed a Cox regression and drawn up some Kaplan-Meier curves and life tables for a very large sample survival analysis (N~120,000) with censoring. The following chart shows one of the hazard rate charts stratified by age group. As you can see, three groups have a di...