Math Probabilities
Terms
undefined, object
copy deck
- What does P mean?
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Pick (permutation)
order matters! - What does C mean?
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Choose (combinations)
order does not matter! - When do you multiply the events by each other?
- If the first event can happen x ways and the second event can happen y ways, then both events can happen in the order given x times y ways.
- what does "!" mean?
- Factorial, it is used when things are repeated or identical.
- How do you calculate the probability of a fraction?
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probability of an event=
# of ways that the event can occur
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# of all possible outcomes - What is the Bernoulli experiment?
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-exactly two possible outcomes
-one success, one failure
-fixed # of trials
-trials are independent
-the probability of each outcome is the same for each trial. - what values must be considered?
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N= Number of trials
R= How many times it must be successful
F= # of failures
S= # of successes - How do you do Binomial expansion?
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IE: (m+2)^3
there will be 4 terms, (One more than the exponent) where a= M and b= 2
-start at zero (3choose 0..1..2..3)
-then multiply everything - one more time! what does P mean?
- pick, permutation, or exact position
- one more time! what does C mean?
- choose, combination, or committee