How to make more sense of the modeling ?

Ivy — Wed, 25 Jan 2017 16:41:36 GMT

Dear all,

I am modeling a logistic regression model , with 14 explaination varibles , and 50,000 records.

Model fitting result:

All 14 variables are significant.

R-Square = 0.1927

Hosmer and Lemeshow Goodness-of-Fit Test

Chi-Square DF Pr > ChiSq

374.8494 8 <.0001

We can see the model only explain 19.27% of the data. Is this model useful at all ?

Thank you,

Ivy

Re: How to make more sense of the modeling ?

Reeza — Wed, 25 Jan 2017 19:26:08 GMT

R squared isn't a good measure of model accuracy for LOGISTIC regression.

There is a pseudo-R squared value and other metrics that are more important. The documentation has examples or google search for evaluating LOGISTIC regression models.

topic How to make more sense of the modeling ? in Statistical Procedures

How to make more sense of the modeling ?

Re: How to make more sense of the modeling ?