When ever event for x event fory
c=a+by
1. Falsipationist - start with you theory, generate formula and then go to data to check
Textbooks present that way
2. Instrumentalist - you start with data and look what theory is consistent with it, easier.
Real life
1. Subjective degree of belief eg. Savage/Ramsey
2. Logical probability - objective degree of belief
a/h=p a:preposition, h:evidence, p:probability
3. Probability is an aspect of external reality (freq. of events) eg Knight, Lucaas, Rat
1. situation of known probabilities
2. situation where probabilities are unknown