Free Mba Semester 1 Solved Assignments For MB0040 -Q2. Explain the approaches to define probability.
Solutions: Explanation of the
approaches to define probability
There are four
approaches to probability. They are:
i)
Classical
/ Mathematical / Priori approach
ii)
Statistical
/ Relative frequency / Empirical / Posteriori approach
iii)
Subjective
approach
iv)
Axiomatic
approach
Classical / Mathematical / Priori
approach Under
this approach the probability of an event is known before conducting the
experiment.
Statistical / Relative Frequency /
Empirical / Posteriori approach Under
this approach the probability of an event is arrived at after conducting an
experiment. If we want to know the probability that a particular household in
an area will have two earning members, then we have to gather data on all
household in that area and arrive at the probability. The greater number of
households surveyed, the more accurate will be the probability arrived.
Subjective approach
Under this approach
the investigator or researcher assigns probability to the events either from
his experience or from past records. It is more suitable when the sample size
is ten or less than ten. The investigator has full knowledge about the
characteristics of each and every individual. However, there is a chance of
personal bias being introduced in such probability.
Axiomatic approach
This approach is
based on set theory. The probability of an event is defined as:
Where,
Ai is ‘n’ mutually exclusive and exhaustive events.
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