Model claim frequencies using Poisson processes.

Free CAS MAS-I (Modern Actuarial Statistics I) lesson in Probability Models. 10 min read, ~1,461 words.

Homogeneous Poisson process with rate:, independent stationary increments, starts at. Inter-arrival times are iid with mean; waiting time to the -th claim is. Superposition: sum of independent Poisson processes with rates is Poisson with rate. Thinning: classify each event independently with probability; the two streams are independent Poisson processes with...

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