Datafiles

  • Strikes Download .TXT file Open in Data Desk ?
  • Methods: Blocking, Paired Data, Regression
  • Source: unknown
  • Number of Cases: 20
  • Excerpt: Advertisements for an instructional video claim that the techniques will improve the ability of Little League pitchers to throw strikes and that, after undergoing the training, players will be able to throw strikes on at least 60% of their pitches. To test this claim, we have 20 Little Leaguers throw 50 pitches each, and we […]


  • Student_survey Download .TXT file Open in Data Desk ?
  • Methods: Center, Conditional Distribution, Confidence Intervals for Means, Contingency Tables, Data Display, Display Quantitative Variable, Hypothesis Tests, Hypothesis Tests for Means, Shape, Spread, Summaries, Tables
  • Source: De Veaux personal data
  • Number of Cases: 299
  • Excerpt: The dataset contains data from a class survey. All responses are self-reported.


  • Student_testing Download .TXT file Open in Data Desk ?
  • Methods: Nonparametric Methods, Quality Control
  • Source: invented
  • Number of Cases: 20
  • Excerpt: Researchers randomly assigned subjects to take one of two tests (form A or form B) either electronically or with pencil and paper. Subjects then took the other test using the other method. The two forms had been designed to be equivalent in difficulty, but nevertheless, that equivalence was checked as part of the experiment. Our […]


  • Sugar_in_cereal Download .TXT file Open in Data Desk ?
  • Methods: Boxplots, Comparing Groups, Outliers, Re-expression, Test for Difference between Two Groups
  • Source: unknown
  • Number of Cases: 28
  • Excerpt: Sugar is a major ingredient in many breakfast cereals. The data gives the sugar content as a percentage of weight for 49 brands of cereal. Data were collected from nutrition labels in a supermarket.


  • Summer_Olympics_2016 Download .TXT file Open in Data Desk ?
  • Methods: Center, Data Display, Display Quantitative Variable, Shape, Spread, Summaries
  • Source: https://www.google.com/search?client=safari&rls=en&q=olympic+medals+by+country+2016&spell=1&sa=X&ved=0ahUKEwjAwPXqgNvOAhWFHB4KHcxYDF8QvwUIGygA&biw=1370&bih=902
  • Number of Cases: 59
  • Excerpt: Fifty nine countries won gold medals in the 2016 Summer Olympics. The dataset lists them, along with the total number of gold medals each won. It can be a challenge to find a good display for data like these.












  • Swim_the_lake_2016 Download .TXT file Open in Data Desk ?
  • Methods: Regression, Test for Difference between Two Groups
  • Source: http://www.soloswims.com/swims.htm
  • Number of Cases: 62
  • Excerpt: People swim across Lake Ontario from Niagara on the Lake to Toronto–a distance of 52 km (32,3 miles). Because the lake is fresh water, this swim is considered more difficult than ocean swims of similar length because salt water provides more boyancy than fresh water. (For comparison, the English Channel is 21 miles across and, […]


  • Swim_the_lake_2019 Download .TXT file Open in Data Desk ?
  • Methods: Comparing Groups, Outliers, Re-expression, Regression, Residuals
  • Source: http://www.soloswims.com/swims.htm
  • Number of Cases: 65
  • Excerpt: People swim across Lake Ontario from Niagara on the Lake to Toronto–a distance of 52 km (32,3 miles). Because the lake is fresh water, this swim is considered more difficult than ocean swims of similar length because salt water provides more boyancy than fresh water. (For comparison, the English Channel is 21 miles across and, […]