Data Visualization Chart Types and Selection

Question 1

Which chart type is best suited for showing the composition of a whole divided into parts?

Accepted Answer

Pie chart

Answer

Pie charts show part-to-whole relationships by dividing a circle into proportional slices.

Question 2

Which chart type is most effective for displaying the distribution of a continuous variable?

Accepted Answer

Histogram

Answer

Histograms display frequency distributions of continuous data by grouping values into bins.

Question 3

What chart type should you use to show the relationship between two continuous variables?

Accepted Answer

Scatter plot

Answer

Scatter plots display correlations and relationships between two continuous quantitative variables.

Question 4

Which visualization is best for comparing values across multiple categories?

Accepted Answer

Bar chart

Answer

Bar charts are the most effective tool for comparing discrete categorical values side by side.

Question 5

Which chart type is specifically designed to show hierarchical data as nested rectangles?

Accepted Answer

Treemap

Answer

Treemaps display hierarchical data as nested rectangles sized proportionally to their value.

Data Visualization Practice Test