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  • RVLS Case Studies

    This site provides case studies which cover subject areas including: analysis of variance, boxplots, confidence intervals, contrast among means, correlated t-test, correlation, histograms, independent groups t-test, regression, repeated measures ANOVA, and t-tests.

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  • Spearman's rho

    Gives a very brief explanation of Spearman' rho and how it differs from Pearson's r.

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  • Chi Square Tests

    The eighth chapter of an online Introduction to Biostatistics course. Lecture notes are provided. Additionally, links for additional reading and exercises with solutions are provided.

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  • Single Sample t-test

    This tutorial on the One Sample t test includes its definition, assumptions, hypotheses, and results. An example using output from the WINKS software is given, but those without the software can still use the tutorial. An exercise is given at the end that can be done with any statistical software package.

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  • T Demonstration

    By changing the number of degrees of freedom in a t-distribution, students can see how the pdf changes. They also have the option of overlayng the standard normal curve so that they can see the convergence.

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  • Kruskal-Wallis "Analysis of Variance" by Ranks

    Explains how to set up the Kruskal-Wallis test and gives the formula for the test statistic.

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  • Log-likelihood ratio

    This site offers an involved definition of the likelihood ratio test with examples and formulas.

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  • Likelihood Ratio Test

    This site focuses on using the LRT to compare two competing models.

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  • Hypothesis Testing for a Proportion and Small Samples

    This site explains small sample hypothesis testing for a normal population and hypothesis testing for a population proportion. Includes examples and exercises.

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  • The One-Sample t Test

    This section on Common Statistical Tests uses an example on faculty publications to show users how to perform a one-sample t test. The discussion includes one-tailed and two-tailed tests.

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