Tableau Desktop Certified Professional — Question 24

When viewing quick table calculations, such as Percent Difference from, that use a value in the previous column, what will be the first data value in the visualization?

Answer options

• A. Zero (0)
• B. Null
• C. Duplicated from the nearest column
• D. The current value

Correct answer: B

Explanation

The correct answer is B, Null, because when calculating a value that depends on a previous column's data, the first instance will not have a preceding value to refer to, resulting in a null entry. Options A, C, and D are incorrect as they suggest fixed numeric values or duplication, which do not apply in this context.