Learn Tableau by Working on Exciting Dashboards - Level of Detail - Introduction

This tutorial explains Level of Detail (LOD) expressions in Tableau, focusing on their role in defining data granularity and how they can be used independently of visualization contexts. It covers the concept of visualization LOD, the use of LOD expressions for calculating total sales and percent of total, and the order of operations in Tableau that affect these calculations. The tutorial also provides a detailed explanation of the syntax for LOD expressions, including the use of keywords like FIXED, INCLUDE, and EXCLUDE.

What does LOD stand for in data visualization?

• Level of Detail

• Level of Data

• Layer of Detail

• Layer of Data

How does adding dimensions to a chart affect its granularity?

• It makes the chart less granular

• It has no effect on granularity

• It decreases the granularity

• It increases the granularity

What is the purpose of using LOD expressions?

• To change the color of charts

• To compute values independent of current dimensions

• To remove dimensions from a chart

• To add more dimensions to a chart

What is the result of using a table scope LOD expression?

• It calculates values based on selected dimensions

• It calculates values for a single dimension

• It calculates values for the entire table

• It calculates values for a single row

Why might you use an LOD expression instead of a table calculation for percent of total?

• LOD expressions are faster

• LOD expressions are more accurate

• LOD expressions are easier to write

• LOD expressions are not affected by filters

What happens to the percent of total when using LOD expressions if a filter is applied?

• The percent remains constant

• The percent is halved

• The percent changes

• The percent doubles

In Tableau, what is the order of operations for filters?

• LOD expressions are applied last

• Context filters are applied first

• Table calculation filters are applied last

• Dimension filters are applied after table calculations

What keyword is used in LOD expressions to specify no dimensions are fixed?

• Include

• Exclude

• Fixed

• None

Which of the following is NOT a keyword used in LOD expressions?

• Include

• Fixed

• Aggregate

• Exclude

What is the correct syntax for an LOD expression?

• {Fixed, [Measure]}

• {Fixed [Dimension] : [Measure]}

• {[Measure] : Fixed}

• {Fixed : [Measure]}