Datafiles

  • Pima Download .TXT file Open in Data Desk ?
  • Methods: Multiple Regression Inference, Regression Inference
  • Source: UCI Machine Learning Repository http://archive.ics.uci.edu/ml/datasets /Pima+Indians+Diabetes. No longer active. 11 observations deleted because BMI was 0
  • Number of Cases: 757
  • Excerpt: The Pima Indians of southern Arizona are a unique community. Their ancestors were among the first people to cross over into the Americas some 30,000 years ago. For at least two millennia, they have lived in the Sonoran Desert near the Gila River. Known throughout history as a generous people, they have given of themselves […]


  • Pi Download .TXT file Open in Data Desk ?
  • Methods: Chi Square Tests
  • Source: pi
  • Number of Cases: 10
  • Excerpt: Many people know the mathematical constant p is approxi-mately 3.14. But that’s not exact. To be more precise, here are 20 decimal places: 3.14159265358979323846. Still not exact, though. In fact, the actual value is irrational; a decimal that goes on forever without any repeating pattern. But notice that there are no 0’s and only one […]


  • Personal_appearance Download .TXT file Open in Data Desk ?
  • Methods: Chi Square Tests
  • Source: GfK Roper Reports‹› Worldwide Survey
  • Number of Cases: 7
  • Excerpt: The GfK Roper Reports® Worldwide Survey asked 30,000 consumers in 23 countries about their attitudes on health, beauty, and other personal values. One question participants were asked was how important their personal appearance is to them. The data are a contingency table of responses to this question by age decade.


  • Penguins Download .TXT file Open in Data Desk ?
  • Methods: Correlation, Outliers, Re-expression, Regression, Residuals
  • Source: Jessica Meir personal communication
  • Number of Cases: 125
  • Excerpt: Emperor penguins are the most accomplished divers among birds, making routine dives of 5–12 minutes, with the longest recorded dive over 27 minutes. These birds can also dive to depths of over 500 meters! Since air-breathing animals like penguins must hold their breath while submerged, the duration of any given dive depends on how much […]


  • Pendulum Download .TXT file Open in Data Desk ?
  • Methods: Outliers, Re-expression, Regression, Residuals
  • Source: unknown
  • Number of Cases: 10
  • Excerpt: A student experimenting with a pendulum counted the number of full swings the pendulum made in 20 seconds for various lengths of string. Her data are given.


  • pay_gap Download .TXT file Open in Data Desk ?
  • Methods: Correlation, Re-expression, Regression
  • Source: https://www.bls.gov/charts/usual-weekly-earnings/usual-weekly-earnings-over-time-total-men-women.htm#
  • Number of Cases: 81
  • Excerpt: The U.S. Bureau of Labor Statistics (BLS) reports median weekly earnings for men and women on a quarterly basis. The data report median weekly earnings for all workers and separately for men and women for the years 2000 – 2020 Q1


  • Passive_smoke Download .TXT file Open in Data Desk ?
  • Methods: Boxplots, Comparing Groups, Outliers, Re-expression
  • Source: unknown
  • Number of Cases: 150
  • Excerpt: Researchers measured the concentration (nanograms per milliliter) of cotinine in the blood of three groups of people: nonsmokers who have not been exposed to smoke, nonsmokers who have been Exposed To Smoke (ETS), and smokers. Cotinine is left in the blood when the body metabolizes nicotine, so its value is a direct measurement of the […]




  • Paper_airplanes Download .TXT file Open in Data Desk ?
  • Methods: Multifactor Analysis of Variance
  • Source: Student experiment from De Veaux
  • Number of Cases: 64
  • Excerpt: A student conducted an experiment to see which, if any, of four different paper airplane designs results in the longest flights (measured in inches).


  • Ozone Download .TXT file Open in Data Desk ?
  • Methods: Boxplots, Displaying Quantitative Data, Regression, Summarizing Quantitative Data
  • Source: Cleveland W. Kleiner B. Mc Rae J. Warner J. "The Analysis of Ground-level ozone data from New Jersey, New York, Connecticut, and Massachusetts: Data quality Assessment and Temporal and Geographical Properties"
  • Number of Cases: 546
  • Excerpt: Ozone levels (in parts per billion, ppb) were recorded at sites in New Jersey monthly between 1926 and 1971. Here are boxplots of the data for each month (over the 46 years), lined up in order (January = 1):


  • Oranges Download .TXT file Open in Data Desk ?
  • Methods: Outliers, Re-expression, Regression, Residuals
  • Source: unknown
  • Number of Cases: 14
  • Excerpt: As the number of oranges on a tree increases, the fruit tends to get smaller. The dataset gives numbers of oranges/tree and average weight/orange (in pounds).