Datafiles
- 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.
- Dow_Jones_2017 Download .TXT file Open in Data Desk ?
- Methods: Time Series Analysis
- Source: https://fred.stlouisfed.org
- Number of Cases: 259
- Excerpt:
- Dow_Jones_2020 Download .TXT file Open in Data Desk ?
- Methods: Correlation, Re-expression, Regression
- Source: https://fred.stlouisfed.org
- Number of Cases: 2610
- Excerpt:
- 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 […]
- Downloads Download .TXT file Open in Data Desk ?
- Methods: Displaying Quantitative Data, Summarizing Quantitative Data
- Source: Manufactured data
- Number of Cases: 24
- Excerpt:
- Drivers_Licenses_2014 Download .TXT file Open in Data Desk ?
- Methods: Tables
- Source: http://www.fhwa.dot.gov/policyinformation/statistics.cfm
- Number of Cases: 16
- Excerpt:
- Drivers_licenses_2020 Download .TXT file Open in Data Desk ?
- Methods: Conditional Distribution, Contingency Tables
- Source: http://www.fhwa.dot.gov/policyinformation/statistics.cfm
- Number of Cases: 21
- Excerpt:
- Drug_abuse Download .TXT file Open in Data Desk ?
- Methods: Correlation, R-squared, Re-expression, Regression, Residuals, Scatterplot
- Source: unknown
- Number of Cases: 11
- Excerpt: A survey was conducted in the United States and 10 countries of Western Europe to determine the percentage of teenagers who had used marijuana and other drugs. The data give percentages of drug use by country.
- Drug_use_2013 Download .TXT file Open in Data Desk ?
- Methods: Multiple Regression Inference, Regression, Regression Inference
- Source: World Drug Report, 2013. www.unodc .org/unodc/en/data-and-analysis/WDR-2013.html
- Number of Cases: 33
- Excerpt: The 2013 World Drug Report investigated the prevalence of drug use as a percentage of the population aged 15 to 64. Data from 32 European countries are shown.
- E-commerce Download .TXT file Open in Data Desk ?
- Methods: Time Series Analysis
- Source: U.S. Census Bureau; www.census.gov
- Number of Cases: 34
- Excerpt: Quarterly e-commerce retail sales (in millions of dollars) in the United States from 1999 to 2008