Datafiles
- Commute_times_sample50 Download .TXT file Open in Data Desk ?
- Methods: Confidence Intervals for Means
- Source: Random sample of 50 taken from Population Commute Times
- Number of Cases: 50
- Excerpt:
- Companies Download .TXT file Open in Data Desk ?
- Methods: Boxplots, Comparing Groups, Correlation, Outliers, Re-expression, Regression, Scatterplot
- Source: Forbes magazine
- Number of Cases: 79
- Excerpt: Facts about companies selected from the Forbes 500 listfor 1986. This is a 1/10 systematic sample from the alphabetical list of companies. The Forbes 500 includes all companies in the top 500 on any of the criteria, and thus has almost 800 companies in the list.
- Companies Quickstart Download .TXT file Open in Data Desk ?
- Methods:
- Source: Forbes magazine
- Number of Cases: 262
- Excerpt: Facts about companies selected from the Forbes 500 list for 2000.
- Computer_chip_manufacturing Download .TXT file Open in Data Desk ?
- Methods: Quality Control
- Source: unknown
- Number of Cases: 21
- Excerpt:
- Computer_lab_fees Download .TXT file Open in Data Desk ?
- Methods: Confidence Intervals for Means, Hypothesis Tests, Hypothesis Tests for Means
- Source: Unknown
- Number of Cases: 12
- Excerpt: The technology committee at a school has stated that the average time spent by students per lab visit has increased and the increase supports their argument that they need to increase lab fees. To substantiate this claim, the committee randomly sampled 12 student lab visits and noted the amount of time spent using the computer. […]
- Congestion_cost Download .TXT file Open in Data Desk ?
- Methods: Correlation, Regression, Scatterplot
- Source: Texas Transportation Institute
- Number of Cases: 65
- Excerpt:
- Consumer_spending Download .TXT file Open in Data Desk ?
- Methods: Regression, Correlation, Scatterplot
- Source: Data adapted from real spending data from American Express
- Number of Cases: 150
- Excerpt:
- Consumer_spending_post_holiday Download .TXT file Open in Data Desk ?
- Methods: Comparing Two Groups
- Source: Data adapted from real spending data from American Express
- Number of Cases: 1200
- Excerpt:
- Containers_revisited Download .TXT file Open in Data Desk ?
- Methods: Multifactor Analysis of Variance
- Source: Student experiment from De Veaux
- Number of Cases: 8
- Excerpt:
- Contrast_baths Download .TXT file Open in Data Desk ?
- Methods: Analysis of Variance, Experiment Design
- Source: R. G. Janssen,D. A. Schwartz, and P. F. Velleman, “A Randomized ControlledStudy of Contrast Baths on Patients with Carpal Tunnel Syndrome,” Journal of Hand Therapy, 2009.
- Number of Cases: 76
- Excerpt:
- Cookie_sales Download .TXT file Open in Data Desk ?
- Methods: Hypothesis Tests
- Source: illustrative data
- Number of Cases: 50
- Excerpt: A company that sells cookies decided to redesign their packaging with brighter colors with the hope of improving sales. They chose a random sample of 50 stores to pilot the new packaging, which holds the same amount of product at the same price point as before. Over the period of a week, the 50 stores […]
- Cookies Download .TXT file Open in Data Desk ?
- Methods: Multifactor Analysis of Variance
- Source: student experiment
- Number of Cases: 99
- Excerpt: A student performed an experiment to compare chocolate chip cookie recipes. He baked batches of cookies with different amounts of Sugar: 0.5, 0.375, and 0.25 cups, with three different kinds of oil, and with three different kinds of Chips: milk, semisweet, and dark chocolate. Cookie quality was scored on a 0 to 10 scale by […]