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  • Probability Sampling

    This website lists five different types of probability sampling, giving the advantages and disadvantages of each.

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  • Building a Probability Tree Applet

    This applet simulates a probability tree diagram. Step 1: Click inside the appropriate box on the desired level to build the tree. Step 2: Click on "Set Probabilities" at the top. Step 3. When you enter the respective probabilities, you must hit the ENTER key after each one. Step 4: Once all of the probabilities have been set (they should be blue), click "Final Tree" Step 5: Click "Simulation".

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  • Introduction to Biostatistics

    An online Introduction to Biostatistics course complete with lecture notes and links for futher reading, links to applets, and exercises with solutions given.

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  • Regression/Correlation

    The ninth chapter of an online Introduction to Biostatistics course. Lecture notes and links for futher reading are provided.

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  • Summarizing Data

    The first chapter of an online Introduction to Biostatistics course. Two lecture notes and a set of overheads are provided. Additionally, links for additional reading and exercises with solutions are provided.

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  • Hypothesis Testing

    The seventh chapter of an online Introduction to Biostatistics course. Two sets of lecture notes are provided (only the first one works). Additionally, links for additional reading and exercises with solutions are provided.

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  • Construct Validity in Psychological Tests

    A paper discussing the development of construct validity as applied to psychological studies.

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  • Comparing Two Groups

    This page discusses the procedures and applications of the two sample t test and the paired t test.

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  • Variance and standard deviation

    This source defines and explains variance and standard deviation.

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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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