Difference between revisions of "SOCR EduMaterials Activities Exponential Distribution"
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Revision as of 20:10, 23 September 2006
This is an activity to explore the Exponential Distribution: Learn how to compute probabilities, densities, and percentiles.
- Description: You can access the applet for the Exponential Distributions
- Here is the shape of the exponential distribution (this is a snpashot from the SOCR website:
- Exercise 1: Graph and print:
a. exp(0.2) b. exp(1) c. exp(10)
- Exercise 2: Locate the maximum density for each one of these distributions.
- Exercise 3: Find the height of the density at 3 values of X (one near 0, one near the mean, and one towards the tail of the distribution).
- Exercise 4: Find one percentile for each of these distributions and record them on the printouts. Verify these percentiles using the formula we discussed in class:
\[ x_p=\frac{ln(1-\frac{p}{100})}{-\lambda} \]
- Exercise 5: Compute one cumulative probability for each one of these distributions, show it on the graph, and verify it with the formula:
\[ P(X \le x)=1-e^{-\lambda x} \]
- SOCR Home page: http://www.socr.ucla.edu
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