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Probabilty - Coggle Diagram
Probabilty
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Value
Sum of probabilities of all elementary events is 1. For events A, B, C; P(A) + P(B) + P(C) = 1
Definitions
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Complementary Event
For event E, complement event, P(–E) = 1 – P(E)
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Examples
Dice
Two dice are rolled, what is probability of getting 13 as a sum?
Solution : Number of Possible outcomes= 6^2
= 36
Number of favorable outcomes= 0
As addition of no two number on the dice will give sum = 13 is not possible
P(E)= 0/36= 0
Coin
When a coin is tossed, what would be the probability of appearing head ?
Solution : Total outcomes = 2
Favorable outcomes = 1
Required Prob. P(E) = 1/2
Card
What is the probability of getting an ace from a pack of 52 cards?
Solution : Number of favorable outcomes = 4
Number of possible outcomes = 52
P(E) = = 4/52 = 1/13