Introduction to Logistic Regression in R

In my previous blog I have explained about linear regression. In today's post I will explain about logistic regression. Consider a scenario where we need to predict a medical condition of a patient (HBP),HAVE HIGH BP or NO HIGH BP, based on some observed symptoms – Age, weight, Issmoking, Systolic value, Diastolic value, RACE, etc.. In this scenario we have to build a model which takes the above mentioned symptoms as input values and HBP as response variable. Note that the response variable (HBP) is a value among a fixed set of classes, HAVE HIGH BP or NO HIGH BP.