### Present Remotely

Send the link below via email or IM

• Invited audience members will follow you as you navigate and present
• People invited to a presentation do not need a Prezi account
• This link expires 10 minutes after you close the presentation

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

# Copy of PROBABILITY

No description
by

## Daniel Meyer

on 15 February 2013

Report abuse

#### Transcript of Copy of PROBABILITY

PROBABILITY coin toss: -A coin has only two sides... so there is a 1/2 chance Example: If you toss a coin 90 times, what is the probability that you get heads? And how many heads will you get? -If you have two coins... the probability is 1/4 The probability is 50% or 45 times. Answer: Because heads is 1/2, the half of 90 is 45! rolling a dice a normal dice has 6 sides normally it goes from 1-6 whenever you have only 1 dice and you roll it only 1 time.... the answer will always be over 6 (/6) "percentage" "chance" definition: chance of an event occurring "odds" P(event): # of favorable outcomes # of possible outcomes Event: one of the outcomes, or a collection of outcomes. Outcome: result of an event Favorable Outcome: the outcome for the specific event THEORETICAL PROBABILITY EXPERIMENTAL PROBABILITY what "should" happen what "actually" happens 0% 25% 50% 75% 100% impossible for event to occur unlikely equally likely to occur very unlikely likely very likely certain to occur example.. P(vowel) = 5/26... what is the theoretical probability that you will get a vowel if you're picking from the alphabet because there are 5 vowels in the alphabet and 26 letters in total. ... you must test it to get it Tree Diagrams FDP Fundamental Counting Principle: multiply the outcomes of each event to get the total outcomes Example: A girl is going to a party and she must choose her outfit from a white or blue shirt, a black, white or beige pants and a pair of red or black shoes Shirts: white blue Pants: white black beige black white beige Shoes: red
black red
black red
black Outcomes: red
black red
black red
black there are 12 possible outcomes. Dependent Events: the outcome of one event that does affect the outcome of another. example: 4 blue, 6 red, and 5 yellow marbles are in a bag. A yellow marble is selected at random and not replaced. what is the probability of getting another yellow marble. total marbles: 15
total marbles without the first yellow marble drawn: 14
P(yellow marble) the first time: 5/15 = 1/3
P(second yellow marble) =4/14= 2/7
P(yellow,yellow)= 1/3 x 2/7= 2/21
Independent Events: Stands alone, the outcome of one event doesn't affect the outcome of the others example: First you flip a coin
and then you roll a dice. P(heads,even)=1/2x1/2=1/4
P(tails,5)=1/2x1/6=1/12
P(tails,8)=1/2x0=0
Spinner: what is the probability that
the spinner lands on a 3? 1/6 what is the probability that
the spinner lands on a 4? 2/6 or 1/3 what is the probability
that the spinner lands
on a primary color 3/4 what is the probability
of landing on red? 2/4 or 1/2 THANK YOU formula:
Full transcript