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14440CAUSEweb.orgen-useditor@causeweb.orgwebmaster@causeweb.orgWed, 30 Jul 2014 12:00:00 -0400Tue, 20 May 2014 12:00:00 -0400http://www.rssboard.org/rss-2-0-1IDEAL: Two-Sample Hypothesis Testing
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1312
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1312This example compares balance measurements in elderly people with those of young men through two-sample hypothesis testing for means. Two applets are provided; one for testing the assumptions beneath two-sample hypothesis tests, and one for calculating the test statistic and p-value.Sun, 24 Feb 2013 10:52:30 -0500IDEAL: Hypothesis Testing for Paired Differences in Means
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1313
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1313This page provides three examples designed to illustrate hypothesis testing for paired differences in means. Example #2 requires Lisp-Stat. The other two examples each contain applets that calculate the test statistic and p-value. Examples #1 and #3 are about city murder rates and types of corn seed, respectively.Sun, 24 Feb 2013 10:49:49 -0500IDEAL: Contingency Tables
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1314
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1314This module demonstrates how to perform two chi-square tests, the chi-square test of independence and the chi-square test of homogeneity, through the use of contingency tables. The applets provided ask users to fill in expected cell frequencies in the table.Sun, 24 Feb 2013 10:47:03 -0500IDEAL: The Normal Distribution
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1320
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1320This module discusses the history and importance of the normal distribution, as well as normal moments, the standard normal distribution, normal probabilities, Z-Scores, and normal quantiles. The applet allows users to compute normal probabilities and quantiles. Three follow-up examples cover cholesterol, male heights, and mean temperatures for various cities in South Carolina.Sun, 24 Feb 2013 10:46:14 -0500Quick Start Guide for Common Calculators
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1094Table of instructions for TI, Casio, HP, Sharp, and some common other brands of calculators. Instructions are given for how to enter data (both one and two variable), how to compute mean, standard deviation (both population and sample), correlation, linear regression coefficients, combinations, permutations, and (importantly) how to turn the calculator on and off.Sun, 24 Feb 2013 10:30:11 -0500IDEAL: Probability Definitions
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1305
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1305This module discusses the probability of an event and relative frequency. The applet shows how empirical probability converges to theoretical probability as the sample size increases. The follow-up example includes an applet that simulates drawing differently colored balls from an urn.Sun, 24 Feb 2013 10:19:29 -0500IDEAL: Hypothesis Testing
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1311This module introduces hypothesis testing with an example on breast cancer rates of Peurto Rican women. The applet provided allows users to manipulate power type, sigma, alpha, delta, and sample size. The Example link at the bottom of the page provides a more detailed discussion of power and instructions for the applet.Sun, 24 Feb 2013 10:18:17 -0500IDEAL: The Poisson Distribution
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1307
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1307This module discusses the conditions of a Poisson experiment and the Poisson distribution. The applet allows the user to compute probabilities from the Poisson distribution. A follow-up example covers horse-kick deaths of Prussian military personnel.Sun, 24 Feb 2013 10:17:03 -0500IDEAL: Confidence Intervals for Paired Differences
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1310
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1310This page provides two examples that illustrate confidence intervals for paired differences in means. Each exercise provides an applet which graphs the data and calculates the interval. The first example is about city murder rates, and the second is about preparation of tobacco leaves.Sun, 24 Feb 2013 10:15:43 -0500IDEAL: The Binomial Distribution
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1306
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1306This module discusses the conditions of a binomial experiment and the binomial distribution. The applet allows the user to compute probabilities from the binomial distribution. Two follow-up examples cover students guessing on a multiple-choice test and the number of delinquents and non-delinquents who wear glasses.Sun, 24 Feb 2013 10:14:36 -0500IDEAL: Confidence Intervals
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1309
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1309This module contains an applet which illustrates factors affecting the width of confidence intervals for means. Users can manipulate the values of the population mean, population standard deviation, the sample size, and the level of confidence. Two follow-up examples, Cholesterol and Speed Of Light, further illustrate this concept.Sun, 24 Feb 2013 10:13:20 -0500IDEAL: The Normal Approximation to the Binomial
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1308This module contains an applet which can be used to experiment with computing approximate and exact binomial probabilities and to assess the conditions for which the normal approximation to the binomial distribution is good.Sun, 24 Feb 2013 10:11:48 -0500IDEAL Modules
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1304
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1304The modules in this collection discuss numerous statistical topics with examples and Java applets. Topics covered: Variable Types; Calculations; Histograms; Moments; Quantiles; Probability Definitions, Laws, and Simulations; Binomial, Poisson, and Normal Distributions, Normal Approximation to the Binomial, Central Limit Theorem, Confidence Intervals, Hypothesis Testing, Control Charts, Contingency Tables, Correlation, and Regression.Sun, 24 Feb 2013 10:07:30 -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 -0500A Useful Display of a Normal Population
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1125
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1125This article describes how to make a physical model of the normal distribution and use it to illustrate the concepts of sampling distributions, confidence intervals, and hypothesis testing.Mon, 21 Jan 2013 06:42:08 -0500A Practical Study of the Capture/Recapture Method of Estimating Population Size
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1109This article describes the process the of capturing and recapturing of mobile animals in order to estimate population size.Mon, 21 Jan 2013 06:37:06 -0500A Class Exercise Concerning the Distribution of Plants
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1108This article describes how an Environmental Science class became involved in a study to confirm the hypothesis that weeds are distributed at random in well established lawns.Mon, 21 Jan 2013 06:32:23 -0500Citizen-Statistician
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2336This blog will be about access: access to data and access to analysis tools. This blog will be about data privacy, and data sharing. This blog will be about people who use data to better their lives and the lives of others. This blog is meant for anyone wishing to become a citizen statistician, but in particular for statistics teachersâ€“those who help empower citizens to become citizen statisticians.Tue, 27 Nov 2012 04:42:03 -0500Johns Hopkins School of Public Health videos on Statistical Reasoning
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2335This YouTube channel includes a series of video interviews between John McGready and some of his colleagues from Johns Hopkins University. The videos are meant to highlight the importance of biostatistics as a core driver of public health discovery, the importance of statistical reasoning in the research process, and how the fundamentals that are covered in an introductory biostatistics course are the framework for more advanced methodology.Tue, 27 Nov 2012 04:29:25 -0500**Lesson Plan: Univariate Statistics
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2330This is a lesson plan for 16 to 17 year old students that focuses on developing students' understanding of the relative strengths and weaknesses of various representations of real world univariate statistics. Students work in groups to research different visual representations and create a wiki page of their findings.Sun, 1 Apr 2012 10:33:56 -0400**Math Notation via email
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2319This site contains lots of helpful hints about how to easily type different mathematical expressions in e-mail messages (or in online discussion forums). This might be particularly helpful for online instructors who want students to talk about problems and share their work with others within the online environment.Sat, 2 Apr 2011 01:23:30 -0400Significance Magazine
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2306Statistics are key to understanding news, developments, and decisions. Updated daily, Significance brings you a statistical view of what's going on in the world. Note there are many articles online but it is also possible to subscribe to a published version of the magazine.Wed, 16 Mar 2011 10:24:48 -0400Chance Magazine
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2305Wed, 16 Mar 2011 10:22:01 -0400Experiment Resources
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2256This site is a collection of resources related to experiments. The site includes references, resources, and articles related to the scientific method, experimental research, ethics in research, and research design. It also includes tips on writing scientific papers, and there are several statistics tutorials on the site. Another interesting feature of the site is a collection of case studies that include descriptions of famous research studies in fields like social psychology, sociology, physics, biology, and medicine.Mon, 10 Jan 2011 04:28:54 -0500The Joy of Stats YouTube video
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http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2248This is short clip from a longer documentary shown on BBC. The BBC documentary takes viewers on a rollercoaster ride through the wonderful world of statistics to explore the remarkable power thay have to change our understanding of the world, presented by superstar boffin Professor Hans Rosling, whose eye-opening, mind-expanding and funny online lectures have made him an international internet legend.Rosling is a man who revels in the glorious nerdiness of statistics, and here he entertainingly explores their history, how they work mathematically and how they can be used in today's computer age to see the world as it really is, not just as we imagine it to be.Rosling's lectures use huge quantities of public data to reveal the story of the world's past, present and future development. Now he tells the story of the world in 200 countries over 200 years using 120,000 numbers - in just four minutes.Thu, 16 Dec 2010 02:40:37 -0500