Data and Analytics Data Visualization

Question 1

Which chart type is best for showing the distribution of a single continuous variable?

Accepted Answer

Histogram

Answer

Bar chart

Answer

Pie chart

Answer

Line chart

Question 2

What does a scatter plot primarily show?

Accepted Answer

Relationship between two numeric variables

Answer

Trends over time

Answer

Proportions of a whole

Answer

Frequency of categories

Question 3

Which visualization tool is most commonly used for business intelligence dashboards in the US?

Accepted Answer

Tableau

Answer

Matplotlib

Answer

Excel pivot tables

Answer

R ggplot2

Question 4

What is a heat map used to represent?

Accepted Answer

Magnitude of values across two dimensions using color intensity

Answer

Geographic temperature data only

Answer

Categorical comparisons over time

Answer

Network connections between nodes

Question 5

Which principle of data visualization does Edward Tufte's 'data-ink ratio' emphasize?

Accepted Answer

Maximizing the proportion of ink used to display data

Answer

Using bright colors for emphasis

Answer

Adding gridlines for readability

Answer

Including as many chart types as possible

Question 6

What chart type is most appropriate for comparing parts of a whole across multiple categories?

Accepted Answer

Stacked bar chart

Answer

Scatter plot

Answer

Box plot

Answer

Waterfall chart