Tableau Exploring and Analyzing Data 3

Question 1

In Tableau, which shelf controls the level of detail (granularity) of the view independently of visual encodings?

Accepted Answer

Detail shelf in the Marks card

Answer

The Detail shelf adds a dimension to the view's granularity without changing color, size, or shape encoding.

Question 2

What is the key difference between a FIXED LOD expression and an INCLUDE LOD expression in Tableau?

Accepted Answer

FIXED ignores view filters (except context filters); INCLUDE adds dimensions to the view's level of detail

Answer

FIXED computes at a specified granularity regardless of view dimensions, while INCLUDE adds extra dimensions to the existing view level.

Question 3

Which Tableau feature would you use to create a parameter-driven top-N filter without writing a calculated field?

Accepted Answer

Top filter using a parameter in the Filter dialog

Answer

The Top tab in the Filter dialog lets you use a parameter to dynamically set the N value for a top/bottom filter.

Question 4

What happens to a secondary data source field when you create a blend in Tableau and the link field has unmatched values?

Accepted Answer

Unmatched rows in the secondary source are excluded; matched primary rows show asterisks (*) for secondary values

Answer

In a blend, the secondary source is left-joined on the linking field, so unmatched secondary values display as asterisks.

Question 5

In a Tableau scatter plot, what is the effect of placing a dimension on the 'Detail' shelf?

Accepted Answer

It increases granularity so each dimension member gets its own mark without visual differentiation

Answer

Adding a dimension to Detail disaggregates marks to that level without encoding color, size, or shape.

Tableau Practice Test