Datafiles

  • DJIA_2017 Download .TXT file Open in Data Desk ?
  • Methods: Time Series Analysis, Normal model
  • Source: https://finance.yahoo.com/quote/%5EDJI/history/
  • Number of Cases: 2142
  • Excerpt: After the financial crisis of 2007/2008, the Dow jones Industrial Average (DJIA) bottomed out at 7278 on March 20, 2009. It then increased steadily, closing above 20,000 in early 2017. The data are daily statistics about the DJIA from 2009 to 2017.


  • Doctors_and_life_expectancy Download .TXT file Open in Data Desk ?
  • Methods: Correlation, Outliers, Re-expression, Regression, Residuals, Scatterplot
  • Source: unknown
  • Number of Cases: 40
  • Excerpt: Life expectancy at birth, TV’s per capita, and doctor’s per capita for countries of the world. Doctors predict life expectancy, but is that causal? TVs also predict life expectancy.




  • Doritos Download .TXT file Open in Data Desk ?
  • Methods: Confidence Intervals for Means, Hypothesis Tests, Hypothesis Tests for Means
  • Source: Unknown
  • Number of Cases: 6
  • Excerpt: Some students checked 6 bags of Doritos marked with a net weight of 28.3 grams. They carefully weighed the contents of each bag and recorded the weights in grams.


  • Dow_Jones_2015 Download .TXT file Open in Data Desk ?
  • Methods: Correlation, Re-expression, Regression
  • Source: finance.yahoo.com
  • Number of Cases: 44
  • Excerpt: The Dow Jones stock index measures the performance of the stocks of America’s largest companies. A regression of the Dow prices on years 1972–2015 appears to be successful, but the residuals raise some questions.






  • Down_the_Drain Download .TXT file Open in Data Desk ?
  • Methods: Correlation, Re-expression, Regression
  • Source: Classical calculus exercise
  • Number of Cases: 7
  • Excerpt: Most water tanks have a drain plug so that the tank may be emptied when it’s to be moved or repaired. How long it takes a certain size of tank to drain depends on the size of the plug, as shown in the table.


  • Downloading Download .TXT file Open in Data Desk ?
  • Methods: Analysis of Variance
  • Source: student project
  • Number of Cases: 48
  • Excerpt: To see how much of a difference time of day made on the speed at which he could download files, a college sophomore performed an experiment. He placed a file on a remote server and then proceeded to download it at three different time periods of the day. He downloaded the file 48 times in […]