MS-DS Master of Data science FREE MS-DS Master of Data science Data Visualization and Communication Questions and Answers 3

Question 1

What is the main advantage of using small multiples (trellis charts) over a single complex chart?

Accepted Answer

They allow easy comparison across categories while keeping each panel simple

Answer

They use less screen space than a single chart

Answer

They eliminate the need for axis labels

Answer

They automatically adjust for different data scales

Question 2

Which storytelling framework is commonly used to structure a data presentation narrative?

Accepted Answer

Situation-Complication-Resolution

Answer

Input-Process-Output

Answer

Extract-Transform-Load

Answer

Normalize-Model-Validate

Question 3

What does 'preattentive processing' mean in the context of data visualization?

Accepted Answer

The brain's ability to detect certain visual properties like color and size almost instantly

Answer

A preprocessing step applied to data before charting

Answer

The act of filtering data before visual encoding

Answer

A machine learning technique for image recognition

Question 4

When visualizing geospatial data showing values per region, which map projection concern is most critical?

Accepted Answer

Area distortion that can misrepresent the magnitude of values in different regions

Answer

Color rendering differences across browsers

Answer

The number of labels that can fit on the map

Answer

Whether the map includes a compass rose

Question 5

Which metric best evaluates whether a data visualization successfully communicates its intended message?

Accepted Answer

Task completion accuracy when users answer questions about the visualized data

Answer

The number of chart types used in the visualization

Answer

The total amount of data points displayed

Answer

The visual complexity score of the design

Question 6

What is the purpose of annotation layers in exploratory data visualizations?

Accepted Answer

To highlight key data points, trends, or anomalies with contextual notes

Answer

To add decorative elements that improve aesthetics

Answer

To replace axis labels with more descriptive text

Answer

To embed raw data values into every data point