Data and Analytics Data Visualization 3

Question 1

What does a waterfall chart primarily illustrate?

Accepted Answer

Cumulative effect of sequential positive and negative values

Answer

Time series trends

Answer

Hierarchical data structures

Answer

Statistical distributions

Question 2

In Power BI, what is a 'slicer' used for?

Accepted Answer

Filtering dashboard visuals interactively by selected values

Answer

Cutting data into training and test sets

Answer

Slicing columnar data in a table

Answer

Dividing reports into pages

Question 3

What is the purpose of a choropleth map?

Accepted Answer

Using color intensity to represent data values across geographic regions

Answer

Showing flight paths between cities

Answer

Displaying 3D topographic data

Answer

Animating data changes over time

Question 4

Which Python library is most commonly used for statistical data visualization?

Accepted Answer

Seaborn

Answer

NumPy

Answer

Pandas

Answer

Scikit-learn

Question 5

What is a Gantt chart primarily used for in data projects?

Accepted Answer

Project scheduling and timeline management

Answer

Visualizing database schemas

Answer

Displaying statistical correlations

Answer

Mapping data lineage

Question 6

What is 'chart junk' in data visualization?

Accepted Answer

Visual elements that add clutter without conveying information

Answer

Broken or corrupted chart files

Answer

Charts with too many data points

Answer

Incorrectly formatted axis labels