Tableau General Practice 3

Question 1

What is a Level of Detail (LOD) expression that computes a value independent of the view's dimensions?

Accepted Answer

FIXED

Answer

A FIXED LOD computes using only the specified dimensions, ignoring the view level of detail.

Question 2

Which Tableau tool is purpose-built for cleaning and shaping data before analysis?

Accepted Answer

Tableau Prep Builder

Answer

Tableau Prep Builder provides a visual workflow for cleaning, combining, and shaping data.

Question 3

What kind of filter is applied before aggregation and limits the data brought into the view by a dimension's top members?

Accepted Answer

Top N filter

Answer

A Top N filter restricts the view to the highest-ranked members of a dimension.

Question 4

Which join type returns only the rows that have matching keys in both tables?

Accepted Answer

Inner join

Answer

An inner join keeps only rows with matches in both tables.

Question 5

What is the purpose of a context filter in Tableau?

Accepted Answer

To create a temporary subset that other filters compute against

Answer

A context filter produces a filtered dataset that subsequent filters and Top N calculations use as their context.

Tableau Practice Test