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14440CAUSEweb.orgen-useditor@causeweb.orgwebmaster@causeweb.orgWed, 23 Jul 2014 12:00:00 -0400Tue, 20 May 2014 12:00:00 -0400http://www.rssboard.org/rss-2-0-1McNemar's Test
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1363
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1363This calculator computes the p-value for McNemar's Test, which determines if the pair AB is as likely as the pair BA. The user inputs values in a 2x2 table, where the pairs AA and BB are ignored. The null hypothesis is that the pairs are equally likely.Sun, 24 Feb 2013 11:33:36 -0500The Wilcoxon Matched-Pairs Signed-Ranks Test
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1364
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1364This calculator computes the p-value for the Wilcoxon Matched-Pairs Signed-Ranks Test, which determines if the members of a pair differ in size. The user inputs either the pairs or the differences in the pairs. The null hypothesis is that the median difference of the pairs is zero.Sun, 24 Feb 2013 11:33:08 -0500The Sign Test
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1362
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1362This calculator computes the p-value for the Sign Test. The user inputs the number of observations above the median (n+) and below the median (n-). The null hypothesis is that values above and below the median are equally likely.Sun, 24 Feb 2013 11:33:02 -0500The Chi-Square Distribution
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1361
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1361This calculator computes probabilities from the Chi-square distribution. Enter the Chi-square statistic (X^2) and the degress of freedom, and the calculator returns the right tail probability at the top of the page.Sun, 24 Feb 2013 11:32:36 -0500The Binomial Distribution
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1358
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1358This calculator computes probabilities from the binomial distribution. The user inputs the number of successes (x), the probability of success (p), and the sample size (N). P(X>=x) is returned at the top of the page.Sun, 24 Feb 2013 11:32:04 -0500The Normal Distribution
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1359
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1359This calculator computes probabilities from the standard normal distribution. The user inputs the z-score (Z), and P(|Z|>=z) is returned at the top of the page.Sun, 24 Feb 2013 11:31:46 -0500The Wilcoxon Two Sample Test
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1368
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1368This calculator computes the p-value for the Wilcoxon Test. The user inputs values for two samples. The null hypothesis is that the populations from which the two samples are taken have identical median values.Sun, 24 Feb 2013 11:26:14 -0500The Rank Correlation Coefficient
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1371
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1371This calculator computes the rank correlation coefficient (R) and p-value for the Rank Correlation Test. The user inputs observation pairs (x,y). The null hypothesis is that their is no monotonic relation between the variables (i.e., any increase in one variable is NOT associated with either an increase or a decrease in the other variable).Sun, 24 Feb 2013 11:25:46 -0500The Correlation Coefficient
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1372
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1372This calculator computes the correlation coefficient (R) and p-value as well as the linear regression line for observation pairs (x,y) input by the user. The null hypothesis is that the pairs are uncorrelated.Sun, 24 Feb 2013 11:25:25 -0500Chi-Square Test for Equality of Distributions
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1375
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1375This calculator computes the chi-square statistic, degrees of freedom (DoF), and p-value for the Chi-square test for equality of distributions. Users input a table of values with row and column labels without total scores. The null hypothesis is that the all the samples have the same distribution.Sun, 24 Feb 2013 11:25:01 -0500Two Correlation Coefficients
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1373
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1373This calculator computes the p-value for comparing two correlation coefficients. Users input two correlation coefficients (R1,R2) and two sample sizes (N1,N2). The null hypothesis is that the correlation coefficients are equal.Sun, 24 Feb 2013 11:24:27 -0500Binomial Proportions
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1367
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1367This calculator computes the probability that two proportions are equal, given sample proportions. The user inputs values for x1, n1, x2, and n2. The null hypothesis is that the two proportions are equal.Sun, 24 Feb 2013 11:24:00 -0500The Student T Test for One Sample
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1365
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1365This calculator computes the t-statistic, degrees of freedom (DF), and p-value for the Student's t Test for pairwise differences. The user inputs either the pairs or the differences in the pairs. The null hypothesis is that the mean difference of the pairs is zero.Sun, 24 Feb 2013 11:22:22 -0500The Student T Distribution
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1360
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1360This calculator computes probabilities from the student t distribution. The user inputs t and the degress of freedom, and P(|T|>=t) is returned at the top of the page.Sun, 24 Feb 2013 11:21:57 -0500The Student-t Test for Two Samples
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1369
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1369This calculator computes summary statistics, the t-statistic, degrees of freedom (DF), and p-value for the Student t-Test. The user inputs values for two samples. The null hypothesis is that the populations have identical mean values.Sun, 24 Feb 2013 11:16:43 -0500Friedman Test
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1370
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1370This calculator computes Kendall's coefficient of concordance (W), Q (approximated by chi-square), degrees of freedom (DoF), and p-value for the Friedman Test. The user inputs a table of values with row and column titles, without total scores. Beginning a line with # excludes the line from the computation. The null hypothesis is that the distributions of ranks within rows are unrelated between rows.Sun, 24 Feb 2013 11:14:42 -0500Chi-Square Test for Known Distributions
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1374
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1374This test checks whether an observed distribution differs from an expected distribution. It computes the chi-square statistic, degrees of freedom (DoF), and p-value. Users input a table with row and column labels, observed frequencies on the first row, and expected frequencies on the second row. The null hypothesis is that the observed values have the expected frequency distribution.Sun, 24 Feb 2013 11:09:59 -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 -0400OStats 4
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2254
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2254OStats is a simple tool for data visualisation and statistical analysis, particularly aimed at helping students learn statistics.Sun, 2 Jan 2011 11:12:01 -0500Stat-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 -0400Student's T Tester Applet
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2044
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2044This applet performs the Student's t test on two sets of data, and reports the average and variance for both sets of data, the t score, degrees of freedom, and one and two tailed P values.Thu, 22 Apr 2010 06:48:36 -0400**Student's t-test applet
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2043
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=2043This java applet can be used to determine whether or not the means in two sample populations are significantly different.Thu, 22 Apr 2010 06:43:31 -0400Analysis Lab
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=50
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=50Some basic statistical analysis tools that allow the user to input their own data or use the pre-existing data and perform the desired test (e.g ANOVA, Descriptive, t-test, chi-square, correlation and regression).Wed, 30 Dec 2009 01:02:27 -0500BrightStat.com - Statistics made easy
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1858
http://www.causeweb.org/cwis/index.php?P=FullRecord&ResourceId=1858BrightStat is a free online application for statistical analyses. Besides many non-parametric tests, BrightStat offers multiple linear regression, logistic regression, ANOVA and repeated measurements ANOVA as well as Kaplan Meier Survival analysis. BrightStat has an easy to use GUI and supports the creation of mostly used scientifc graphs such as line-, bar-, scatter- and box-plots as well as histograms.Wed, 8 Apr 2009 07:26:57 -0400