introduction to logistic regression a k a varbrul l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Introduction to logistic regression a.k.a. Varbrul PowerPoint Presentation
Download Presentation
Introduction to logistic regression a.k.a. Varbrul

Loading in 2 Seconds...

play fullscreen
1 / 4

Introduction to logistic regression a.k.a. Varbrul - PowerPoint PPT Presentation


  • 231 Views
  • Uploaded on

Introduction to logistic regression a.k.a. Varbrul. Christopher Manning Ling 236, 2002. Logistic regression. Describes association of binary (or discrete) response variable with set of explanatory variables (often, but not necessarily discrete) Mean of binary response is probability

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Introduction to logistic regression a.k.a. Varbrul' - sherlock


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
logistic regression
Logistic regression
  • Describes association of binary (or discrete) response variable with set of explanatory variables (often, but not necessarily discrete)
  • Mean of binary response is probability
    • So, probability is related to regression-like model
    • Interpretation of coefficients is in terms of odds
  • Model, estimation and inference differ from linear regression, but use in practice is similar
risk measures
Risk measures
  • Odds
  • Odds ratio : ratio of odds (focus: risk indicator, covariate)
      • odds in target group / odds in control group [reference category]: ratio of favourable outcomes in target group over ratio in control group. The odds ratio measures the ‘belief’ in a given outcome in two different populations or under two different conditions. If the odds ratio is one, the two populations or conditions are similar.