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14440CAUSEweb.orgen-useditor@causeweb.orgwebmaster@causeweb.orgThu, 31 Jul 2014 12:00:00 -0400Tue, 20 May 2014 12:00:00 -0400http://www.rssboard.org/rss-2-0-1Confronting Some Statistical Inference Misconceptions
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1301
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1301This lesson poses a series of questions designed to challenge students' possible misconceptions of statistical inference and hypothesis testing. The lesson uses the statistical software, Fathom, and three datasets with information on the number of chips per canister distributed by a snack maker. The data can found at the relation address below.Sun, 24 Feb 2013 09:33:39 -0500A Variation on Coin Tossing Experiments
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1100
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1100This article explains a coin tossing activity emphasizing the central limit theorem and binomial distributions.Mon, 21 Jan 2013 06:44:56 -0500StatKey
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2334
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2334StatKey is the analysis package to accompany the textbook "Statistics: Unlocking the Power of Data." StatKey includes interactive applets to describe and graph data, engage in bootstrapping and randomization tests, and explore sampling distributions and theoretical distributions.Sat, 4 Aug 2012 06:09:13 -0400Statistics Applets
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2326
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2326This is an extensive collection (and a continuously expanding collection) of applets on topics that include probability, descriptive statistics, sampling distributions, Monte Carlo simulation, Buffon's coin problem, chi-square, p-values, correlation, and more. There is even a random number generator that is part of the collection.Wed, 21 Mar 2012 01:17:16 -0400Webinar: This Little Piggy Teaches Probability
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2228
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2228November 23, 2010 Activity Webinar presented by Stacey Hancock, Reed College, Jennifer Noll, Portland State University, Sean Simpson, Westchester Community College, and Aaron Weinberg, Ithaca College, and hosted by Leigh Slauson, Capital University. Extra materials available for download free of charge. Many instructors ask students to demonstrate the frequentist notion of probability using a simulation early in an intro stats course. Typically, the simulation involves dice or coins, which give equal (and known) probabilities. How about a simulation involving an unknown probability? This webinar discusses an experiment involving rolling (unbalanced) pigs. Since the probabilities are not equal, this experiment also allows the instructor to have students think about the concept of fairness within games.Sun, 28 Nov 2010 11:18:02 -0500**Statistics Online Computational Resource (SOCR) Modeler
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2220The SOCR Modeler allows the user to compare data with typical statistical models such as the beta distribution, exponential, gamma, Poisson, etc. The user can adjust the bin ranges for the data comparison.Mon, 22 Nov 2010 03:29:36 -0500Law of Averages applet
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2113
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2113This applet uses simulations with a coin and a die to illustrate the law of averages.Sun, 29 Aug 2010 05:43:39 -0400Stat-Attic Statistics Applets for Teaching Topics in Introductory Courses
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2059
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2059This site contains links to and descriptions of over 600 applets that can be used for demonstrations or analysis of topics commonly covered in introductory statistics courses.Sat, 22 May 2010 10:38:41 -0400Probability Plotter/Calculator
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2045
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2045Probability plotter and calculator allows students to explore different distributions and their relationships. Interactive dialogue box allows students to change distribution shape and scaling parameters as well as allowing to explore cumulative probabilities. Discrete distributions include the discrete uniform, binomial, and the poisson. Continuous distributions include the uniform, beta, exponential, weibull, gamma, and lognormal distributions. Sampling distributions include the normal, the t-distribution, the chi-square, and the F-distribution.Sat, 24 Apr 2010 08:51:18 -0400**Monty Hall Paradox
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2017Sat, 20 Feb 2010 10:12:50 -0500Webinar: Mites and Wilt Disease - Using Simulation to Examine a 2 x 2 Table
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2009
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2009January 26, 2010 webinar presented by Alicia Gram, Smith College, and hosted by Leigh Slauson, Capital University. This webinar describes an activity that uses data collected from an experiment looking at the relationship between two categorical variables: whether a cotton plant was exposed to spider mites; and did the plant contract Wilt disease? The activity uses randomization to explore whether there is a difference between the occurrence of the disease with and without the mites. The webinar includes a discussion of the learning goals of the activity, followed by an implementation of the activity then suggestions for assessment. The implementation first uses a physical simulation, then a simulation using technology. (Extra materials, including Fathom instructions for the simulation, available for download free of charge).Thu, 4 Feb 2010 02:44:37 -0500AniWiki
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2007
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2007AniWiki is a gallery for statistical animations in several subjects such as probability, linear models, multivariate statistics, and nonparametric statistics. Most of the animations are created in the R environment.Sun, 10 Jan 2010 10:01:45 -0500Webinar: Taking your Class for a Walk ... Randomly
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1980
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1980An important idea in statistics is that the amount of data matters. Often this is taught with formulas --- the standard error of the mean, the t-statistic, etc. --- in which the sample size appears in a denominator as √n. This is fine, so far as it goes, but it often fails to connect with a student's intuition. This webinar describes a kinesthetic learning activity --- literally a random walk --- that helps drive home to students why more data is better and why the square-root arises naturally and can be understood by simple geometry. Students remember this activity and its lesson long after they have forgotten the formulas from their statistics class.Sun, 1 Nov 2009 10:32:46 -0500Webinar: Is the iPod shuffle feature truly random? A simulation activity.
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1933
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1933June 23, 2009 Activity webinar presented and hosted by Leigh Slauson, Otterbein College. This webinar describes an activity that uses the playlist from an iPod music player to teach the concept of random selection, the various sampling techniques, and the use of simulation to estimate probability. The webinar includes a discussion of the background of this activity, the learning goals of the activity, how this activity can be adapted to different levels of technology, suggestions for assessment, and other supplemental reference materials. (handouts and other materials available for free download)Sun, 2 Aug 2009 10:35:46 -0400Cartoon: Raking the Lawn
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1789
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1789A cartoon that can be used in teaching about the efficiency of using simulation in statistics. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.Tue, 8 Jan 2008 08:16:15 -0500Psychic test
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1742
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1742This activity illustrates the convergence of long run relative frequency to the true probability. The psychic ability of a student from the class is studied using an applet. The student is asked to repeatedly guess the outcome of a virtual coin toss. The instructor enters the student's guesses and the applet plots the percentage of correct answers versus the number of attempts. With the applet, many guesses can be entered very quickly. If the student is truly a psychic, the percentage correct will converge to a value above 0.5.Tue, 22 May 2007 01:36:11 -0400Quote: Coveyou on Random Numbers
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1692
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1692"The generation of random numbers is too important to be left to chance." The title of a 1969 article by American Mathematician and civil rights activist Robert R. Coveyou (1915 - 1996). (Appl. Math., 3 p. 70-111)Mon, 18 Dec 2006 01:33:14 -0500**Virtual Experiments and Demonstrations
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1439This applet allows users to run experiments such as Ball and Urn, Buffon's Needle, Craps, Monty Hall, and many more. Select an experiment from the drop down menu and click "About" to read its description. Then, set the parameter values. Set the sample size using the "Update" box and the number of samples using the "Stop" box. The single arrow button takes one sample and the double arrow button takes the number of samples selected. Graphs of the theoretical and empirical distributions are shown.Fri, 24 Mar 2006 02:05:53 -0500**Interactive Games
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1440
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1440This applet allows users to play several probability games like Monty Hall, Gambler's Ruin, Galton's Board, etc. Select a game from the drop down menu and click "About" to read its background. Users can manipulate the parameters for each game. Graphs of the theoretical and empirical distributions are shown.Fri, 24 Mar 2006 02:05:53 -0500**Signal Detection Theory Tutorial
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1136
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1136Every day we have to make decisions about uncertain events like, 'Is that my phone ringing or one on the television?', or, 'Is the person talking to me telling the truth?' In this tutorial, you will learn about the Signal Detection Theory (SDT) model of how people make decisions about uncertain events. This tutorial explains the theory behind signal detection, covers several SDT measures of performance, and introduces Receiver-Operating Characteristics (ROCs). The tutorial is at an introductory level, but also has optional sections appropriate for more advanced students and researchers. The tutorial consists of explanatory text, interactive examples, and a question section suitable for a classroom assignment. The tutorial also contains a Java applet for computing and graphically portraying SDT models. This tutorial is introductory in level and builds upon other tutorials on the WISE Project's web site. The hypothesis testing tutorial is particularly appropriate, and it is also helpful to be comfortable working with z-scores.Wed, 24 Aug 2005 04:40:50 -0400An Illustration of Bootstrapping Using Video Lottery Terminal Data
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1091
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1091The dataset described in this article contains information on 345 plays on an electronic slot machine and the prize for each. This data can be used to illustrate parametric bootstrapping and tests of independence for two and three-way contingency tables involving random zeroes. Key Words: Simulation; Elementary probabilities.Tue, 26 Jul 2005 03:48:25 -0400Random Babies Applet
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=994
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=994This applet simulates randomly assigning newborn babies to families and measures the number of matches, or instances when a baby is assigned to its real family. The applet keeps track of each trial and records the information in a histogram. The idea is to teach theoretical values associated with random sampling. The relation website is a worksheet activity to accompany the applet. Mon, 20 Jun 2005 01:27:33 -0400Random Babies Activity
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=993
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=993This worksheet activity teaches random sampling and theoretical probabilities by simulating the effects of randomly assigning newborn babies to their mothers. Students will perform trials and keep track of results, then use the information to deduce properties of random sampling. The relation website is an applet that simulates the process automatically.Mon, 20 Jun 2005 01:20:53 -0400Whelk-Come to Mathematics: Using Rational Functions to Investigate the Behavior of Northwestern Crow
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=980
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=980This Unit Plan contains 4 lessons in which students will make a conjecture, conduct an experiment, analyze the data, and work to a conclusion using rational functions to investigate the behavior of Northwestern Crows.Mon, 23 May 2005 04:10:39 -0400Monty's Dilemma: Should You Stick or Switch?
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=976
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=976This activity presents a version of a classic game-show scenario. You pick one of three doors in hopes of winning the prize. The host opens one of the two remaining doors which reveals no prize, then asks if you wish to "stick or switch." Which choice gives you the best chance to win? The approach in this activity runs from guesses to experiments to computer simulations (links to applets are provided) to theoretical models. The activity can be adapted by leaving out the "flip-a-coin" strategy presented here.Mon, 23 May 2005 03:48:03 -0400