DAC Data Tools and Visualization 2

Question 1

In Tableau, which object type is used to combine multiple worksheets and filters into a single interactive view?

Accepted Answer

Dashboard

Answer

A dashboard combines multiple worksheets, filters, and objects into one interactive layout.

Question 2

Which chart type best displays the correlation between two continuous numeric variables?

Accepted Answer

Scatter plot

Answer

A scatter plot maps two numeric variables on the X and Y axes to reveal correlation.

Question 3

In Power BI, which language is used to create calculated columns and measures?

Accepted Answer

DAX

Answer

DAX (Data Analysis Expressions) creates calculated columns and measures in Power BI.

Question 4

What is the primary purpose of a treemap visualization?

Accepted Answer

Show hierarchical part-to-whole relationships

Answer

A treemap uses nested rectangles to show hierarchical part-to-whole proportions.

Question 5

Which color practice most improves accessibility for colorblind users in dashboards?

Accepted Answer

Using colorblind-safe palettes with patterns or labels

Answer

Colorblind-safe palettes plus patterns or labels avoid reliance on color alone.

Data Analytics Certifications (DAC) Practice Test