Probabilities (4)
'probabilities' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for odds that I've seen before include "Betting ratio" , "Measure of probability" , "The likelihood of something occurring rather than not" , "Variance" , "Betting price" .)
'probabilities' is the definition.
('chance' can be a synonym of 'probability')
This is the entire clue.
(Other definitions for chances that I've seen before include "Opportunities or risks" , "Runs a risk" .)