Chapter 2: Working with Numbers and Data Display
Answers for all ‘Test Yourself’ questions from the book to check your performance and widen your overall understanding of the contents.
- 5/4, 1.25, 125%
- 1/5, .2, 20%
- 1/20, .05, 5%
- 3/10 = .3
- 9/10 = .9
- A pie chart, because the data is qualitative (name of salesperson), and the manager wants to see them as a proportion of total sales.
- A histogram, because psychological survey data is interval, which is quantitative.
- A scatterplot, because we are comparing two variables.
- A bar chart and frequency table, because the data is qualitative, and we are comparing different groups.
- A frequency polygon, because the data is quantitative, and he’ll be able to compare the polygon for Year 1 to the polygon from Year 2.