Practicing and exploring

Test your knowledge and understanding by answering some questions, get some hands-on practice, and explore the topics covered in this chapter with deeper research.

Exercise 2.1 – Test your knowledge

To get the best answer to some of these questions you will need to do your own research. I want you to "think outside the book" so I have deliberately not provided all the answers in the book.

I want to encourage you to get in the good habit of looking for help elsewhere, following the principle of "teach a person to fish."

What type would you choose for the following "numbers"?

1. A person's telephone number.
2. A person's height.
3. A person's age.
4. A person's salary.
5. A book's ISBN.
6. A book's price.
7. A book's shipping weight.
8. A country's population.
9. The number of stars in the universe.

10. The number of employees in each of the small...