This applet simulates drawing samples from a binomial distribution. Users set the population proportion of success (pi), sample size (n), and number of samples. By clicking “Draw Samples,” the applet will draw a sample and display the corresponding sample histogram. Each new sample drawn is added to the previous ones unless the user clicks “Reset” between samples. Users can choose to display the number and proportion of successes above or below a certain value (tail probabilities) by entering a value in the “Num Successes” box and clicking “Count.” The portion of the distribution that meets the condition is highlighted in red, and the proportion of success is given at the bottom of the page. Clicking the inequality sign changes its direction. Clicking “Theo Values” displays the theoretical distribution in green on top of the empirical. Instructions and an activity for this applet can be found in the textbook “Investigating Statistical Concepts, Applications, and Methods” (ISCAM) in Lesson 3.2.2 on page 205.

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Source | http://www.rossmanchance.com/applets/ |

Email Address | arossman@calpoly.edu, bchance@calpoly.edu |

Date Of Record Creation | 2006-07-31 14:13:12 |

Date Of Record Release | 2005-06-20 13:27:33 |

Date Last Modified | 2007-12-26 13:11:45 |

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Author Name | Allan Rossman, Beth Chance |

Author Organization | California Polytechnic State University |

Technical Requirements | Java Applet |

Comments | This applet provides a useful visual representation of sampling from the binomial distribution, which can help enhance students’ understanding of the binomial. Teachers without the ISCAM textbook will have to spend some time preparing materials and activities for students to get the most benefit from this applet. |

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