Register to reply 
Probability of an outcome given multiple attributesby redeemer90
Tags: correlation 
Share this thread: 
#1
Jun910, 02:15 PM

P: 4

Hi,
Lets say I have the following attributes... Body fat percentage, Body mass index Outcome = obese (yes / no) I have data for all attributes and outcomes. What I'd like to do is a joint probability. For example I'd like to know what the probability is of someone being obese given their BMI and body fat percentage. I can calculate the correlation between the attributes and the outcomes. My intuition tells me that I need to combine the correlation in some way, but can't seem to find any information on this. Can someone point me in the right direction?  Sid 


#2
Jun910, 02:39 PM

P: 300

I don't know about joint probability, but I'd say something like this would do:
P(being obese) = P(person with BMI x being obese) * P(person with Body Fat Percentage n being obese) http://en.wikipedia.org/wiki/Joint_p...y_distribution 


#3
Jun910, 03:13 PM

Sci Advisor
HW Helper
P: 2,482

You should look into regression analysis with a limited (binary) dependent variable, "limdep."
See "logit" and "probit" under: http://en.wikipedia.org/wiki/Limited_dependent_variable 


#4
Jun910, 08:31 PM

P: 300

Probability of an outcome given multiple attributes
It sounds like you're actually looking at discrete choice modeling: http://en.wikipedia.org/wiki/Discrete_choice
Found this under the article that Enuma linked to. 


#5
Jun1010, 10:46 AM

P: 4

Thanks for all the help. Will look in to all the links now and see which one suits my needs.
 Sid 


Register to reply 
Related Discussions  
Why do we take the probability of an event ratio as favorable / possible outcome  Set Theory, Logic, Probability, Statistics  14  
Multiple Percentages Probability  General Math  3  
Multiple Bayesian probability  Calculus & Beyond Homework  0  
Do elementary particles have attributes?  High Energy, Nuclear, Particle Physics  4  
Minimum set of attributes  General Physics  0 