Data Science Data Visualization and Communication 5

Question 1

Which visualization is most appropriate for displaying hierarchical part-to-whole data with nested categories?

Accepted Answer

Treemap

Answer

Line chart

Answer

Scatter plot

Answer

Box plot

Question 2

What is the main advantage of small multiples?

Accepted Answer

They allow easy comparison across categories using a shared scale and layout

Answer

They use less data

Answer

They eliminate the need for titles

Answer

They are always interactive

Question 3

Which is a key reason to choose a horizontal bar chart over vertical bars?

Accepted Answer

Long category labels are easier to read horizontally

Answer

It changes the data values

Answer

It always loads faster

Answer

It requires no axis

Question 4

What does a choropleth map encode?

Accepted Answer

Values across geographic regions using color shading

Answer

Network connections

Answer

Time trends only

Answer

Distribution bins

Question 5

When designing an interactive dashboard, what is a best practice for the default view?

Accepted Answer

Present the most important summary first with drill-down available

Answer

Show every possible filter expanded

Answer

Hide all metrics behind menus

Answer

Start with raw unaggregated rows

Question 6

Which mistake most commonly distorts the comparison of areas in bubble charts?

Accepted Answer

Sizing bubbles by diameter instead of area

Answer

Using too few bubbles

Answer

Adding a legend

Answer

Using a single color

Question 7

What is the most effective title for a business chart?

Accepted Answer

An action-oriented takeaway message stating the insight

Answer

A generic label like 'Sales Chart'

Answer

No title at all

Answer

The file name