SOCR EduMaterials Activities Discrete Distributions
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(→This is an activity to explore the Negaive Binomial Probability Distribution.) |
(→This is an activity to explore the Negative Binomial Probability Distribution.) |
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| - | == This is an activity to explore the | + | == This is an activity to explore the Poisson Probability Distribution.== |
* '''Description''': You can access the applets for the above distributions at http://www.socr.ucla.edu/htmls/SOCR_Distributions.html . | * '''Description''': You can access the applets for the above distributions at http://www.socr.ucla.edu/htmls/SOCR_Distributions.html . | ||
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| - | + | * '''Exercise 1:''' Use SOCR to graph and print the distribution of a Poisson random variable with <math> \lambda=2 </math>. What is the shape of this distribution? | |
| + | * '''Exercise 2:''' Use SOCR to graph and print the distribution of a Poisson random variable with <math> \lambda=15 </math>. What is the shape of this distribution? What happens when you keep increasing <math> \lambda </math>? | ||
| - | <center>[[Image: | + | * '''Exercise 3:''' Let <math> X \sim Poisson(5) </math>. Find <math> P(3 \le X < 10) </math>, and <math> P(X >10 | X \ge 4) </math>. |
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| + | * '''Exercise 4:''' Poisson approximation to binomial: Graph and print <math> X \sim b(60, 0.02) </math>. Approximate this probability distribution using Poisson. Choose three values of <math> X </math> and compute the probability for each one using Poisson and then using binomial. How good is the approximation? | ||
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| + | Below you can see the distribution of a Poisson random variable with <math> \lambda=5 </math>. In this graph you can also see the probability that between 2 and 5 events will occur. | ||
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| + | <center>[[Image: SOCR_Activities_Christou_poisson.jpg|600px]]</center> | ||
Revision as of 23:17, 27 October 2006
This is an activity to explore the Poisson Probability Distribution.
- Description: You can access the applets for the above distributions at http://www.socr.ucla.edu/htmls/SOCR_Distributions.html .
- Exercise 1: Use SOCR to graph and print the distribution of a Poisson random variable with λ = 2. What is the shape of this distribution?
- Exercise 2: Use SOCR to graph and print the distribution of a Poisson random variable with λ = 15. What is the shape of this distribution? What happens when you keep increasing λ?
- Exercise 3: Let
. Find 
, and 
.
- Exercise 4: Poisson approximation to binomial: Graph and print
. Approximate this probability distribution using Poisson. Choose three values of X and compute the probability for each one using Poisson and then using binomial. How good is the approximation?
Below you can see the distribution of a Poisson random variable with λ = 5. In this graph you can also see the probability that between 2 and 5 events will occur.
- SOCR Home page: http://www.socr.ucla.edu
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