# Essential Design Principles for Tableau Week 1

Course Name: Data Visualization with Tableau

Sub-course: Essential Design Principles for Tableau

Course Link: Data Visualization with Tableau

Sub-course Link: Essential Design Principles for Tableau

### Final Quiz

Q1. True/False: You have 3 data points: 29%, 33%, 31%. It is appropriate to adjust the y-axis to start at 25% because the numbers are so close to each other.
False
True

Q2. Although most authors view pie charts as to-be-avoided at all costs, others do see them as effective. Select the one scenario where both pro- and anti-pie chart writers will agree that pie charts should not be used.
When Communicating part-to-whole relationship.
To put the audience in a positive frame of mind.
When there are 5 or more categories that are to be compared.
A pie chart with 2 slices.

Answer: When there are 5 or more categories that are to be compared.

Q3. According to your readings, a functionalist perspective of data visualization is _________________.
When a visualization is exciting to look at.
When a visualization is comprehensive and can answer every question in one view.
When a visualization effectively represents the data so that is can be understood quickly and easily.
When a visualization uses many colors.

Answer: When a visualization effectively represents the data so that is can be understood quickly and easily.

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Q4. What’s the one thing definitively wrong with this visualization:

Branding visualizations should be avoided at all costs.
“Then” should be yellow; “now” should be green.
The numbers are wrong.
The y-axis doesn’t start at zero.

Answer: The y-axis doesn’t start at zero.

Q5. This visualization has several issues with its design. Identify the only one of the following that is not an issue with this visualization.

It’s very difficult to interpret.
The reference line is not clear.
There is too much text.
The bar heights do not match the percentages.

Answer: There is too much text.

Q6. According to your readings, if you have a lot of categories in time series data, what is the best approach for your visualization from the following options:
Line graphs with totals above
Trellis plot
Stacked area graphs
A stream graph (a type of stacked area graph displaced around a central axis)

These are answers of Essential Design Principles for Tableau Coursera Week 1 Quiz

Q7. True/False: It is more helpful to the reader to eliminate the axis altogether where appropriate and label individual data elements on the visualization itself.
True
False

Q8. A 3D chart should be used only in the following circumstances:
Only when you need to compare values across categories.
Whenever possible as long as you ensure that elements are well labeled.
Whenever you want to add visual elements to your visualization that pop.
Only when you need to plot three-dimensional data.

Answer: Only when you need to plot three-dimensional data.

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Q9. Can you find the line with the average length in this set?

Line A
Line B
Line C
Line D
Line E

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Q10. When doing a presentation for a large group of people, the best visualization to show differences between categories of data is one of the following:
Pie chart
Cross-tabulation or table
Bar graph

Q11. A scatterplot is useful for showing ____________________.
Spatial information.
Dimension on one axis and measures on the other axis.
Data that are at different time periods.
Two different measures.

Q12. Pick the one time that you should not use a table.
Always avoid tables bigger than 2 x 2
When you are presenting to a large, live meeting.
At a committee meeting where people can spend time focusing on the visual.
On a website which people will access on their own time.

Answer: When you are presenting to a large, live meeting.

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Q13. Humans have developed perceptual and cognitive capabilities that initially tend to favor ___________________?
Precision and completeness
Speed
Accuracy

Q14. True/False: Data in a visualization must never be sorted based on the importance of the category of the data.
True
False

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Q15. Suppose you have a bar graph that has values of 4 and 5. If you start the axis at 0 and increment by 1, then the visual increase between the bars showing 5 and 4 is 25%. See example A:

What would the visual increase be between the bars representing 4 and 5 if you started the axis at 3 and incremented by one? See example B:

60%
12.5%
125%
100%

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Q16. Which most closely describes the process of visual encoding?
Transcending
Transposition
Translation

Q17. System 1 refers to which type of thinking and responding?
Fast, intuitive, and emotional
Moderate, methodical, and qualitative
Slow, deliberate, and logical

Q18. System 2 refers to which type of thinking and responding?
Fast, intuitive, and emotional
Moderate, methodical, and qualitative
Slow, deliberate, and logical

These are answers of Essential Design Principles for Tableau Coursera Week 1 Quiz

Q19. If you had to figure out the sum of all line lengths, that would involve?
Systems 1 and 2
Only System 1
Only System 2