Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • 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
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

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

DeleteCancel

Probability

description
by

Alan B

on 25 January 2010

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Probability

Probability
Probability is the likelyhood of an event
All probability exists between 0 and 1.
0 means something isn't going to happen
1 means something is going to happen. Outcome is the result of an experiment. An experiment is 'doing something'
-flipping a coin
-rolling a number cube
-spinning a spinner Sample space are the total amount of outcomes:
- for instance a coin's sample space is 2
- a number cube's sample space is 6 (6 sides)

A spinner with 4 equal sections has a sample space of 4
Event - a subset of the sample space.

For instance - landing on a head is an event in a coin toss.
The other possible event would be tails Theoretical probability Ratio of the possible ways an event can happen. For instance a coin toss has a theoretical probability of 1/2. Rolling a 2 on a number cube would have a probability of 1/6. What is the sample space?
What event are you waiting on? How many total possible outcomes? What is the probability? Question 1 in clicker Answer was A.

Add all together to get the sample space.
Sample space is 57
12/57 = 0.21
4/19 = 0.21
The P(Red)= 4/19 Question 2 in clicker
Answer was B
All probability has to be
between 0 and 1.
-2 wasn't between 0 and 1
160% is 1.6 as a decimal
2 isn't between 0 and 1 The answer was C The reason it was c is that all of the students were 8th
graders - so there was a 100% chance that the student
selected would be an 8th grader (100% = 1 as a decimal) Question 3 Question 4 Answer was A

There were no pentagons - so there was no chance of drawing one. The answer was B

All probability must exist between 0 and 1.

15% = 0.15
150% - 1.5
1500% = 15
Question 5 Question 6 The answer was B.
There were 4 colors - so the answer should be close to 1/4 or 0.25
0.23 is very close to 1/4
Full transcript