complementary events ~ A Maths Dictionary for Kids Quick Reference by Jenny Eather

Quick Reference ~ A maths Dictionary for Kids by Jenny Eather

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complementary events • two outcomes in a probability experiment that are the only possibilities. • one is the complement of the other, e.g. tossing a head or a tail. • written as P(A) + P(B) = 1, e.g. P(heads) = 0.5 P(tails) = 0.5 0.5 + 0.5 = 1 EXAMPLES:

complementary events

• two outcomes in a probability experiment
that are the only possibilities.
• one is the complement of the other, e.g.
tossing a head or a tail.
• written as P(A) + P(B) = 1, e.g.
P(heads) = 0.5
P(tails) = 0.5
0.5 + 0.5 = 1

EXAMPLES:
complementary events


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