Mastering Tableau 2018.1, Second Edition 7.4: Quick Table Calculations – Rank

The video tutorial explains the rank function, a table calculation function used to compute rankings within data partitions. It covers different options like computation, modified computation, dense rank, and unique rank, highlighting how they handle duplicate values. The tutorial demonstrates applying the rank function in Tableau, showing how to use quick table calculations and edit table calculations to sort data. It emphasizes the importance of understanding rank options for data analysis and preparation, especially in identifying and handling duplicate data.

What is the primary purpose of the rank function in data analysis?

• To assign ranks to data within partitions

• To calculate the sum of data values

• To sort data alphabetically

• To filter out duplicate data

Which option in the rank function skips the next number when duplicate values are present?

• Computation

• Modified Computation

• Dense Rank

• Unique Rank

In Tableau, what is the first step to apply a rank function to a data table?

• Select the data table

• Choose the rank function from quick table calculation

• Sort the data in ascending order

• Filter out duplicate values

How does the dense rank option handle duplicate values?

• Assigns the same rank without skipping numbers

• Assigns different ranks to each duplicate

• Assigns the same rank and skips the next number

• Removes duplicate values

Why is understanding the difference between dense rank and unique rank important?

• It is a common interview question

• It is used to calculate averages

• It helps in filtering data

• It helps in sorting data alphabetically

What is the syntax for creating a rank function manually in Tableau?

• sort(expression, 'order')

• sum(expression, 'order')

• filter(expression, 'order')

• rank(expression, 'order')

What upcoming topic is mentioned at the end of the video?

• Advanced sorting methods

• Window functions

• Data visualization tips

• Data filtering techniques