1 / 4

Chapter 2 - Data

Chapter 2 - Data. * Context of the data is absolutely essential before we do anything!. The W’s (and H): Who, What, When, Where, Why, How “Who” does not always imply people. * Data tables help organize the data. * Each row of a data table is called an individual case.

hbennie
Download Presentation

Chapter 2 - Data

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 2 - Data * Context of the data is absolutely essential before we do anything! • The W’s (and H): Who, What, When, Where, Why, How • “Who” does not always imply people * Data tables help organize the data * Each row of a data table is called an individual case

  2. * Individuals = the things that we want to collect data from. People, animals, cars, etc. * Cases are usually from a SAMPLE of a larger POPULATION (hopefully representative) * POPULATION = ALL individuals that we want to conclude about * SAMPLE = small group of the population that we actually collect data from. Use this data to conclude about the population

  3. Read to middle of p. 11 • Variables are the “WHAT” of the data- things that were observed or collected. • Two types of variables: • Categorical: variable that names categories (words or numeric) • Quantitative: variable with numeric values, makes sense to take an average (must have units) - Examples: Colleges/Universities Come up with a few categorical and quantitative variables about colleges that you would be interested in recording if you were looking to apply to that college.

  4. Read top of page 13 • Complete “Just checking”

More Related