Data and Analytics Data Visualization 2

Question 1

What does a box plot (box-and-whisker plot) display?

Accepted Answer

Distribution summary including median, quartiles, and outliers

Answer

A box plot shows the five-number summary (minimum, Q1, median, Q3, maximum) and visually highlights outliers.

Question 2

Which color scale is recommended for sequential data with a meaningful zero point?

Accepted Answer

Sequential single-hue scale

Answer

A sequential single-hue scale uses varying lightness of one color to represent ordered data, making magnitude differences clear.

Question 3

What is the main purpose of a dashboard in data analytics?

Accepted Answer

To provide a real-time overview of key metrics in one view

Answer

A dashboard consolidates key performance indicators and metrics into a single, at-a-glance interface for monitoring business health.

Question 4

What is a KPI in the context of data visualization?

Accepted Answer

Key Performance Indicator

Answer

A KPI (Key Performance Indicator) is a measurable value that demonstrates how effectively a company is achieving key business objectives.

Question 5

Which type of chart is best for showing data trends over time?

Accepted Answer

Line chart

Answer

A line chart connects data points chronologically, making it ideal for visualizing trends, patterns, and changes over time.

Data and Analytics Practice Test