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Association & Odds Ratios 48
Goodness of Fit 48
Proportions 44
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  • Against All Odds: 28. Inference for Proportions

    This free online video program "marks a transition in the series: from a focus on inference about the mean of a population to exploring inferences about a different kind of parameter, the proportion or percent of a population that has a certain characteristic. Students will observe the use of confidence intervals and tests for comparing proportions applied in government estimates of unemployment rates."

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  • Who is Buying iMacs?

    This case study covers the following concepts: confidence intervals for proportions and the normal approximation to the binomial. It also assesses the question: "What proportion of the iMac purchasers are new computer owners?"

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  • Diet and Health

    This case study compares a low-fat diet to a "Mediterranean diet" to see which led to better health. Concept: Chi Square test of independence

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  • Magnets and Pain Relief

    This case study assesses the question, "Can the application of magnetic fields be an effective treatment for pain?" It addresses concepts including: boxplots, stem and leaf displays, correlated t-test, two-sample t-test, repeated measures analysis of variance, and analysis of covariance.

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  • Unequal n ANOVA and Types of Sums of Squares

    This simulation illustrates types of sums of squares in a 2 x 3 ANOVA.

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  • 2 x 2 Contingency Tables

    This applet simulates experiments using 2 x 2 contingency tables. You specify the population proportions and the sample size and examine the effects on the probability of rejecting the null hypothesis.

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  • Data+Applet: Restriction of Range

    This applet shows how the correlation between two variables is affected by the range of the variable plotted on the X-axis.

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  • DAU StatRefresher: Probability

    These tutorials on probability cover basic probability, random variables, expectations, and distributions with interactive assessment at the end of each tutorial.

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  • Data Collection: The Data Library

    The Data Library contains lists of ongoing data-sharing projects, downloadable data sets in Excel spreadsheet format, and other sources of data found on the web.

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  • Relative Risks and Odd Ratios

    This site provides a PowerPoint presentation of a lesson and examples of relative risks and odds ratios.

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