Tableau Data Visualization and Analytics 3

Question 1

What is the difference between a calculated field and a parameter in Tableau?

Accepted Answer

A calculated field derives values from data; a parameter is a user-controlled single value

Answer

Calculated fields compute from underlying data while parameters are dynamic single values controlled by users.

Question 2

Which type of calculation in Tableau is computed using the local data after the query returns, such as RUNNING_SUM?

Accepted Answer

Table calculation

Answer

Table calculations operate on the aggregated results already in the visualization.

Question 3

What does a FIXED level-of-detail (LOD) expression do?

Accepted Answer

Computes a value at a specified dimension level regardless of view detail

Answer

FIXED LOD expressions aggregate at the dimensions you specify, independent of the view's granularity.

Question 4

Which function would you use to return the current date and time in a Tableau calculation?

Accepted Answer

NOW()

Answer

NOW() returns the current datetime, while TODAY() returns only the date.

Question 5

In Tableau, what does the IIF function evaluate?

Accepted Answer

A single condition returning one of two values (plus a null option)

Answer

IIF tests one condition and returns the true value, false value, or an optional value for unknown.

Tableau Practice Test