r square

Hey, My bachelor thesis is about fatigue, nausea and cognitive decline in patients who have head and neck radiation. For example, the dependent variable is fatigue, looked at the difference score (score of fatigue 6 months after radiation (T1) - the start of radiation (T0) score. The...

Hello Talk Stats, this is my first post on this forum, interestingly typing in modeling forum in google took me to a series of websites that was not my desired search result. So I am currently making my 6th version of a model designed to predict the likelihood of of a particular medical...

Hello, I have preformed a stepwise regression on my data set using SPSS. In the out put table the "R Square Change" value for the second model is larger than the "R Square Change" value for the first model. I am not sure why that is. I was expecting SPSS to output the model with the...

One-way ANOVA can be used to estimate the contribution of a variable (x) to the variation in another one (y). I have some questions about it: 1. How to perform it in JMP 9? I am eager to get the R square. 2. Is this R square identical with the one by multivariate regression? 3. In ANOVA, is...

When a variable is added and then removed in stepwise regression, what happens to the proportion of the variance it explained?