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  • Dataset: Organ Weight Study in Rats

    This dataset comes from a study of 90 rats given one of 3 doses of a drug. At sacrifice, data on body weight and the weights of various organs were collected. Questions from this study refer to the relationship between dosage and body and organ weight. A text file version of the data is found in the relation link.

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  • Dataset: Developmental Signs Testing in Rat Pups

    This dataset comes from a study of rats given one of 4 doses of a drug. The resulting pups were tested for developmental signs. Questions from this study refer to the relationship between dosage and developmental response. A text file version of the data is found in the relation link.

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  • Dataset: Blood Pressure Study

    This dataset comes from a study of diabetic patients randomly assigned to a two-period crossover design. Patients were given 1 of 2 drug sequences (EN, NE) in each period and blood pressure was recorded. Questions from this study refer to the ability of the drugs to lower blood pressure. A text file version of the data is found in the relation link.

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  • Dataset: Drug Interaction Study

    This dataset comes from a study of 8 healthy patients randomly assigned to a two-period crossover design. Patients were given 1 of 2 drug sequences and data on blood plasma levels wer recorded. Questions from this study refer how the drugs affect plasma levels. A text file version of the data is found in the relation link.

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  • Dataset: Bioequivalence Study II

    This dataset comes from a study of 26 healthy male subjects randomly assigned to a two-period crossover design. Patients were given either Drug A or Drug B, and data on plasma levels were collected. Questions from this study refer the similarity of the drugs. A text file version of the data is found in the relation link.

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  • Dataset: Method Comparison Study

    This dataset comes from a study of 48 hypertensive patients given one of 3 doses of one drug and one dose of another drug. Questions from this study refer to associations and relationships between the drugs. A text file version of the data is found in the relation link.

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  • Dataset: Combination Therapy Bioequivalence Study

    This dataset comes from a study of 16 healthy subjects randomly assigned to one of two treatment sequences in a two period crossover design. Treatments were from two different drug companies. Questions from this study refer to the similarities of the two treatments. A text file version of the data is found in the relation link.

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  • Understanding the Least-Squares Regression Line

    This applet allows students to explore three methods for measuring "goodness of fit" of a linear model. Users can manipulate both the data and the regression line to see changes in the square error, the absolute error, and the shortest distance from the data point to the regression line.

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  • Confronting Some Statistical Inference Misconceptions

    This 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.

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  • Intuitive Biostatistics: Choosing a Statistical Test

    This page provides a table for selecting an appropriate statistical method based on type of data and what information is desired from the data. It also compares parametric and nonparametric tests, one-sided and two-sided p-values, paired and unpaired tests, Fisher's test and the Chi-square test, and regression and correlation. It comes from Chapter 37 of the textbook, "Intuitive Biostatistics".

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