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This applet simulates drawing samples of Reese’s Pieces from a candy machine. Users set the sample size, number of samples, and theta, the population proportion of orange pieces. The applet keeps track of each sample and displays a dotplot of the sample proportion of orange pieces. Users can also count the number of samples below, above, or between two proportions and superimpose the normal distribution curve on the dotplot. The animation option can be turned off when selecting larger sample sizes. Instructions and activities for this applet can be found in the textbook “Investigating Statistical Concepts, Applications, and Methods” (ISCAM) in Investigations 4.3.1 on page 301 and 4.3.2 on page 309. This applet also supplements “Workshop Statistics: Discovery with Data,” 2nd edition, Activities 16-2 and 16-3. For more information about this book, go to Additional materials written for this applet can be found at
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Date Of Record Creation 2007-07-24 16:35:07
Date Of Record Release 2007-07-24 18:21:50
Date Last Modified 2007-07-24 18:21:50
Statistical Topic
Material Type
Author Name Allan Rossman, Beth Chance
Supplemental (Lesson Plans)
Comments This applet provides a useful way for introducing sampling distributions of proportions. The various display options help students deepen their understanding of sampling and lead to the Central Limit Theorem. The associated textbooks provide valuable activities, but teachers without the books will have to create their own materials around this applet.
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