Chapter 3 - ratemaking, underwriting, rating Flashcards
Define rate.
- the price of insurance for a period of one year
Define premium.
- is arrived at by multiplying the rate times the amount of insurance purchased.
- it is the total cost of an insurance policy or a portion of that policy.
What is ratemaking?
- the process of establishing rate for each class of insurance
- is carried out by actuaries who are highly trained professionsals
- they may be employed insurers or an organization that specializes in determining advisory rates
What principles are required to determine premiums?
- law of averages (law of large numbers)
- theory of probability.
Define law of large numbers.
- the principle that the reliance to be placed upon a given probability is increased when the number of trials or cases is increased
Define theory of probability.
- relates to the likelihood of an occurrence, expressed by the ratio of the number of actual occurrences to that of possible occurrences
- # of actual occurrences/# of possible occurrences = probability or chance of event happening
- usually spoken of as the chance that the event will happen
What factors is the reliability of predictions dependant on?
1) size of sample
- more reliable with larger size
2) time period over which sample was taken
- more reliable results with longer time periods
3) conditions in the past relative to future conditions
- predictions of events in the future based on past events tend to be reliable
What are the steps in rate determination?
1) classifcation of risks established on:
a) types of objects insured
b) hazards of exposure
2) Gather statistics on past losses
- validity depends on loss data covering a number of losses over a period of time
- used to predict future
3) Determine pure premium (premium required to meet the losses that occur)
4) Determine total premium
- pure premium + loadings, repair costs, inflation, overhead, profit, expenses (such as cost of production)
5) Determine rate
What do loadings (for trends in accidents) include?
- increases in unexplained fires
- more auto theft
- increases in severe weather disturbances
What does cost of production include?
- brokers
- commissions
- promotion
- advertising
What does overhead include?
- providing for business premises
- equipment
- office supplies
- staff salaries
- taxes
Define chance.
- the probability of an event occurring
- may be represented as a fraction
- numerator is the # of times event happens
- denominator is the # of times event may possibly happen
- stats on losses suffered by a large # of people, the # of losses suffered by a similar group can be predicted with reasonable accuracy.
What are policies referred as when they name the perils they insure?
- named-peril policy
What are policies referred as when they are a combination of fire and casualty?
- multi-peril
What does an all risks policy entail?
- may sound all inclusive but include exclusions for certain events or perils