'Sq adj' presentation slideshows

Model selection and model building

Model selection and model building. Model selection. Selection of predictor variables. Statement of problem. A common problem is that there is a large set of candidate predictor variables.

711 views • 44 slides

Multicollinearity

Multicollinearity. Multicollinearity. Multicollinearity (or intercorrelation ) exists when at least some of the predictor variables are correlated among themselves. In observational studies, multicollinearity happens more often than not.

687 views • 35 slides

Comparing Means for Several Populations

Comparing Means for Several Populations. When we wish to test for differences in means for only 1 or 2 populations, we use one- or two-sample t inference. Testing for differences in more than 2 populations, or at several different levels (values) of a variable involves a different approach.

487 views • 33 slides

Descriptive measures of the degree of linear association

Descriptive measures of the degree of linear association. R-squared and correlation. Coefficient of determination. R 2 is a number (a proportion!) between 0 and 1. If R 2 = 1: all data points fall perfectly on the regression line predictor X accounts for all of the variation in Y

454 views • 18 slides

Chicago Insurance Redlining Example

408 views • 17 slides

Zestimate it!

271 views • 14 slides