Datafiles

  • 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).




  • 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 […]


  • 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


  • 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.


  • 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 […]


  • 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.


  • 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 […]


  • 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 […]


  • Pima indians Download .TXT file Open in Data Desk ?
  • Methods: Regression
  • Source: UCI Machine Learning Repository http://archive.ics.uci.edu/ml/datasets /Pima+Indians+Diabetes.
  • Number of Cases: 768
  • 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 […]


  • Pizza_prices Download .TXT file Open in Data Desk ?
  • Methods: Boxplots, Center, Comparing Groups, Correlation, Data Display, Display Quantitative Variable, Displaying Quantitative Data, Outliers, Re-expression, Regression, Scatterplot, Shape, Spread, Summaries, Summarizing Quantitative Data
  • Source: From Norean Sharpe personal communication
  • Number of Cases: 156
  • Excerpt: Sales volume and price of a slice of plain pizza ($) in Baltimore, Dallas, Chicago, and Denver for 156 weeks. How are prices and sales volumes related? Are patterns the same across cities?