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2 x 2 Contingency Tables
Created by David Lane of Rice University, 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...
Chi Square Test of Deviations from Expected Frequencies
The applet allows users to sample from a normal distribution or from a uniform distribution. It shows the expected values and the observed values and computes the deviation. Then, a chi-square test shows if the...
Physical Strength and Job Performance
Created by David Lane of Rice University, this case study aims to answer the question, "How does one select employees to perform physically demanding jobs?" It examines the relationship between isometric strength tests...
Who is Buying iMacs?
This case study, by David M. Lane of Rice University, covers the following concepts: confidence intervals for proportions and the normal approximation to the binomial. It also assesses the question: "What proportion of...
Physicians' Reactions to Overweight Patients
This case study, by David M. Lane of Rice University, assesses the question, "Do physicians discriminate against overweight patients?" This study indicates that, at least in one respect, they do. Basic concepts are...
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