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LL-null

LL-null

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Can anybody please explain LL null intuitively or more precisely?

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365 Team
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Hi Garrett,
 
The logit model is:
 
log(pi/1-pi) = log(odds) = beta0 + beta1*x1 + beta2*x2 + ...
 
where log(odds) is the log-odds of an event occurring (success of en event), beta0 is the intercept, and x1, x2, ... are the predictors.
 
Now, LL-Null is the log-odds of a model that has no predictors and contains just the intercept:
log(odds) = beta0
 
Therefore, LL-Null is the log-odds of success of an event, estimated without reference to any predictors.
 
Hope this helps!
Best,
The 365 Team

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