Data Science Data Visualization and Communication 4

Question 1

Which storytelling structure is commonly used to frame a data presentation?

Accepted Answer

Situation, complication, resolution

Answer

Random fact dumping

Answer

Code, output, exit

Answer

Title only

Question 2

When should you use a stacked area chart instead of multiple line charts?

Accepted Answer

When emphasizing cumulative totals and part-to-whole over time

Answer

When comparing exact individual values precisely

Answer

When showing a single series

Answer

When plotting categorical data

Question 3

What is 'chart junk'?

Accepted Answer

Non-essential decorative elements that distract from the data

Answer

Essential axis labels

Answer

The data series itself

Answer

The chart title

Question 4

Which approach best directs a viewer's attention to the single most important data point in a chart?

Accepted Answer

Use a preattentive cue like a contrasting highlight color on that point

Answer

Color every element brightly

Answer

Remove all axes

Answer

Add a 3D effect to everything

Question 5

Why is a log scale sometimes used on an axis?

Accepted Answer

To better display data spanning several orders of magnitude

Answer

To hide outliers permanently

Answer

To make the chart prettier

Answer

To eliminate the need for a legend

Question 6

What is the best way to handle a chart with too many overlapping data series?

Accepted Answer

Use small multiples or filter to key series

Answer

Keep all 20 lines in one color

Answer

Switch to a single pie chart

Answer

Add more series

Question 7

When communicating uncertainty in an estimate, which visual element is most appropriate?

Accepted Answer

Error bars or confidence interval bands

Answer

A bold single point with no range

Answer

A larger font

Answer

A brighter color