Probability-A branch of math that deals with uncertainty. It is the likliness of an occurance. Probability is used for many things like gambiling and meterology.
-Probability can be shown in terms of percentages.
-Probability runs between the number 1 and 0. It it usually represented as a fraction and reduced.
-You can determine the probability either empirically or theoretically. In math we mostly use empirical beacause they are based on exact observations.
-An experiment can be done to determine your own statistics to find the probability of something.
Formulas:
*Probability of either of two events: P(A+B) = P(B) + P(A) - P(A and B)
Similar to Compliment formula
*Probability of eith of two mutually exclusive events (means that they happen at the same time) : P(A or B) = P(A) + P(B)
EX1. What is the probability of flipping a quater and getting tails?
1/2.
You get 2 as the bottom number because thats all 2 different possible outcomes. You get one as top number because thats the one outcome you were asked to find.
EX2. What is the probability of rolling a die and getting 3 or 1?
2/6 reduces to 1/3
You have 6 as bottom number because thats all the different possibilities and 2 as you top number because your were asked to find two different outcomes.
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