p1 (p of y at mean of x) : 0.2
p2 (p of y at mean of x +1 sd): (0.4
What is odds ratio?
odd1: (0.2)/(1-0.2)=0.2/0.8=1/4=.25
odd2: (0.4)/(1-0.4)=0.4/0.6=2/3=.33
odds ration: odd2/odd1: 0.33/0.25=1.32
