Selected Chapter 2 Review Questions
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Section 2.2
1. How do you describe the importance of data in analytics? Can we think of
analytics without data?
Section 2.3
2. What is data? How does data differ from information and knowledge?
Section 2.4
3. What are the main data preprocessing steps?
Section 2.5
4. List and briefly define the central tendency measures of descriptive statistics. (3
of them)
a.
b.
c.
5. List and briefly define the dispersion measures of descriptive statistics. (5 of
them)
a.
b.
c.
d.
e.
Section 2.6
6. What is regression, and what statistical purpose does it serve?
Section 2.7
7. What is a report? What are reports used for?
Section 2.8
8. What is data visualization? Why is it needed?
Section 2.9
9. What are the main differences among line, bar, and pie charts? When should you
use one over the others?
Section 2.10
10. Why should storytelling be a part of your reporting and data visualization?
Section 2.11
11. List and briefly describe the three layers of information portrayed on dashboards.
a.
b.
c.

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