You started this chapter by learning how to visualize relationships in the data. Scatter plots and bubble charts are the most important charts in this category to show relationships between two or three variables, respectively.
Then, you moved to another category of data visualization, which aimed to make comparisons in the data. The most common charts that you can use to show comparisons are bar charts, column charts, and line charts. Tables are also useful to show comparisons.
The next use case that you learned was visualizing data distributions. The most common types of charts that are used to show distributions are histograms and box plots.
Then, you moved to compositions. You can use this set of charts when you want to show the different elements that make up the data. While showing compositions, you must be aware of whether you want to present static data or data that changes over time. For static data, you should use a pie chart, a stacked 100% bar chart, or a tree map. For data that changes over time, you should use a stacked area chart, a stacked 100% area chart, a stacked column chart, or a stacked 100% column chart.
The last section of this chapter was reserved for QuickSight, which is an AWS service that you can use to visualize your data. You learned about the different versions and features of the service, and you were then introduced to SPICE.
Well done! In the next chapter, you will learn about machine learning algorithms. That is going to be a very important chapter for your certification journey, so make sure you are prepared! However, before you jump into that new chapter, take some time to practice a little more for the exam!
Apart from a solid understanding of key concepts, being able to think quickly under time pressure is a skill that will help you ace your certification exam. That is why working on these skills early on in your learning journey is key.
Chapter review questions are designed to improve your test-taking skills progressively with each chapter you learn and review your understanding of key concepts in the chapter at the same time. You’ll find these at the end of each chapter.
How To Access These Resources
To learn how to access these resources, head over to the chapter titled Chapter 11, Accessing the Online Practice Resources.
To open the Chapter Review Questions for this chapter, perform the following steps:
Alternatively, you can scan the following QR code (Figure 5.13):
Figure 5.13 – QR code that opens Chapter Review Questions for logged-in users
Figure 5.14 – Chapter Review Questions for Chapter 5
For the first three attempts, don’t worry about the time limit.
ATTEMPT 1
The first time, aim for at least 40%. Look at the answers you got wrong and read the relevant sections in the chapter again to fix your learning gaps.
ATTEMPT 2
The second time, aim for at least 60%. Look at the answers you got wrong and read the relevant sections in the chapter again to fix any remaining learning gaps.
ATTEMPT 3
The third time, aim for at least 75%. Once you score 75% or more, you start working on your timing.
Tip
You may take more than three attempts to reach 75%. That’s okay. Just review the relevant sections in the chapter till you get there.
Target: Your aim is to keep the score the same while trying to answer these questions as quickly as possible. Here’s an example of how your next attempts should look like:
| Attempt | Score | Time Taken |
| Attempt 5 | 77% | 21 mins 30 seconds |
| Attempt 6 | 78% | 18 mins 34 seconds |
| Attempt 7 | 76% | 14 mins 44 seconds |
Table 5.1 – Sample timing practice drills on the online platform
Note
The time limits shown in the above table are just examples. Set your own time limits with each attempt based on the time limit of the quiz on the website.
With each new attempt, your score should stay above 75% while your “time taken” to complete should “decrease”. Repeat as many attempts as you want till you feel confident dealing with the time pressure.
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