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1. Poisson distribution
Pr (k) = (e-y ( yk) / k !
Where
Pr = probability
k = number of claims per year
y = expected number of claims
2. Binomial distribution
( )Pr(k) = N pk qN-k
k
Where
Pr = probability
N = number of possible occurrences
k = number of occurrences per year
p = the expected probability of one occurrence
3. Frequency
Fk = kC
E
Where
Fk = frequency per k xposure units
k = scale factor
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