'Logarithmic transformation' diaporamas de présentation

Regression With Categorical Variables

Regression With Categorical Variables. Overview. Regression with Categorical Predictors Logistic Regression. Regression with a Categorical Predictor Variable. Recall that predictor variables must be quantitative or dichotomous.

624 views • 28 slides

Regression With Categorical Variables

Regression With Categorical Variables. Overview. Regression with Categorical Predictors Logistic Regression. Regression with a Categorical Predictor Variable. Recall that predictor variables must be quantitative or dichotomous.

404 views • 28 slides

Transforming the data

Transforming the data. Modified from: Gotelli and Allison 2004. Chapter 8; Sokal and Rohlf 2000 Chapter 13. What is a transformation?. It is a mathematical function that is applied to all the observations of a given variable

305 views • 22 slides

Variance Stabilizing Transformations

Variance Stabilizing Transformations . Variance is Related to Mean. Usual Assumption in ANOVA and Regression is that the variance of each observation is the same Problem: In many cases, the variance is not constant, but is related to the mean. Poisson Data (Counts of events): E(Y) = V(Y) = m

218 views • 7 slides

Homogeneity of Variance

222 views • 3 slides

Homogeneity of Variance

516 views • 3 slides

Homogeneity of Variance

166 views • 3 slides