Data Visualization Chart Types and Selection 3

Question 1

Which chart type is most effective for showing part-to-whole relationships when you have more than 5 categories?

Accepted Answer

Stacked bar chart

Answer

Stacked bar charts handle many categories more clearly than pie charts when comparing multiple part-to-whole relationships.

Question 2

What is a candlestick chart primarily used for?

Accepted Answer

Financial market price movements

Answer

Candlestick charts show open, high, low, and close (OHLC) prices for financial instruments over time.

Question 3

Which chart type best shows how individual data values stack up relative to the whole over time?

Accepted Answer

100% stacked area chart

Answer

100% stacked area charts normalize all values to 100%, showing changing proportions of categories over time.

Question 4

When would you choose a diverging bar chart over a standard bar chart?

Accepted Answer

When data has a meaningful midpoint or natural zero

Answer

Diverging bar charts are ideal when data has a natural neutral midpoint, such as Likert scale responses or profit/loss.

Question 5

What is the key advantage of a lollipop chart over a bar chart?

Accepted Answer

Reduces visual clutter while conveying the same information

Answer

Lollipop charts reduce ink and visual clutter by replacing filled bars with a line and dot, highlighting the endpoint value.

Data Visualization Practice Test