Statistics Dictionary
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Subtraction Rule
The rule of subtraction follows directly from two important properties of
probability:
-
The probability of a sample point ranges from 0 to 1.
-
The sum of probabilities of all the sample points in a
sample space
equals 1.
Rule of Subtraction The probability
that event A will occur is equal to 1 minus the probability that event A will
not
occur.
P(A) = 1 - P(A')
