Custom table calculation scope in Tableau - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does 'scope' mean in Tableau's custom table calculations?

Scope defines which data points the calculation looks at when computing results. It controls the range of data the calculation uses.

beginner

How does changing the scope affect a table calculation result?

Changing the scope changes which rows or columns the calculation includes, which can change the final numbers you see.

intermediate

What is the difference between 'Addressing' and 'Partitioning' in Tableau table calculations?

Addressing defines the direction or fields the calculation moves through, while partitioning defines the groups or sections the calculation restarts in.

intermediate

Why would you use a custom scope in a table calculation?

To control exactly which data points are included in the calculation, allowing for more precise and meaningful results.

intermediate

Give an example of a real-life situation where adjusting the scope of a table calculation is useful.

If you want to calculate running totals by month within each region separately, you adjust the scope to partition by region and address by month.

In Tableau, what does the 'scope' of a table calculation control?

A Which data points the calculation uses

B The color of the chart

C The font size of labels

D The data source connection

Scope controls which data points the calculation includes when computing results.

What is 'addressing' in Tableau table calculations?

A The data source location

B The fields the calculation moves through

C The chart title

D The filter applied

Addressing defines the direction or fields the calculation moves through.

What does 'partitioning' do in a table calculation?

A Filters data source

B Changes the chart type

C Groups data where calculation restarts

D Sorts the data alphabetically

Partitioning defines groups where the calculation restarts.

If you want a running total by month within each region, how should you set scope?

A Partition by region, address by month

B Partition by month, address by region

C Address by region only

D Partition by all data

Partitioning by region restarts calculation per region; addressing by month moves calculation through months.

Changing the scope of a table calculation will:

A Change the font color

B Change the data source

C Change the dashboard layout

D Change the calculation's result

Changing scope changes which data points are included, affecting the result.

Explain what 'scope' means in Tableau custom table calculations and why it matters.

Think about which data points the calculation looks at.

Describe the difference between addressing and partitioning in table calculations.

One controls direction, the other controls groups.

Practice

1. What does the Custom Table Calculation Scope control in Tableau?

easy

A. Which data points are included in the calculation

B. The color scheme of the visualization

C. The font size of labels

D. The data source connection type

Solution

1. Step 1: Understand the purpose of table calculation scope

   The scope defines which data points Tableau uses when performing calculations like running totals or rankings.

2. Step 2: Identify what is controlled by scope

   It controls the subset of data included in the calculation, not visual formatting or data source settings.

3. Final Answer:

   Which data points are included in the calculation -> Option A

4. Quick Check:

   Scope controls data points included [OK]

Hint: Scope means which data points calculation uses [OK]

Common Mistakes:

• Confusing scope with visual formatting
• Thinking scope changes data source
• Mixing scope with filter settings

2. Which option correctly sets the scope of a table calculation to compute using only the Region dimension in Tableau?

easy

A. Compute Using > Pane (Across)

B. Compute Using > Table (Down)

C. Compute Using > Region

D. Compute Using > Table (Across)

Solution

1. Step 1: Identify the dimension to set scope

   To limit calculation to the Region dimension, select Compute Using > Region.

2. Step 2: Understand Compute Using options

   Options like Table (Down) or Table (Across) use the entire table direction, not a specific dimension.

3. Final Answer:

   Compute Using > Region -> Option C

4. Quick Check:

   Compute Using dimension name sets scope [OK]

Hint: Choose dimension name under Compute Using for scope [OK]

Common Mistakes:

• Selecting Table (Down) instead of dimension
• Confusing Pane with Table scope
• Not selecting specific dimension

3. Given a sales table with dimensions Region and Category, what will be the result of a running total table calculation with scope set to Compute Using: Category for Region 'West'?

medium

A. Running total sums all data ignoring Region and Category

B. Running total resets for each Category within the West region

C. Running total resets for each Region ignoring Category

D. Running total sums all Categories across all Regions

Solution

1. Step 1: Understand scope set to Category

   Compute Using Category means the running total computes along the Category dimension, restarting (partitioned) by other dimensions like Region.

2. Step 2: Consider Region filter 'West'

   Filtered to West, the running total resets for each Category within the West region.

3. Final Answer:

   Running total resets for each Category within the West region -> Option B

4. Quick Check:

   Compute Using Category: along Category, reset by Region [OK]

Hint: Compute Using sets addressing (along), partition sets reset [OK]

Common Mistakes:

• Thinking running total sums all regions
• Ignoring filter on Region
• Confusing scope with partitioning

4. You set a table calculation to Compute Using: Table (Across) but the running total is incorrect. What is the most likely cause?

medium

A. The table calculation is not enabled

B. The calculation is missing a filter

C. The data source is not connected

D. The data is arranged vertically, but scope is set horizontally

Solution

1. Step 1: Analyze Compute Using Table (Across)

   This scope computes calculation across columns (horizontally).

2. Step 2: Check data arrangement

   If data is arranged vertically (down rows), computing across columns causes incorrect results.

3. Final Answer:

   The data is arranged vertically, but scope is set horizontally -> Option D

4. Quick Check:

   Scope direction must match data layout [OK]

Hint: Match Compute Using direction to data layout [OK]

Common Mistakes:

• Ignoring data layout when setting scope
• Assuming filters cause running total errors
• Thinking data source connection affects calculation

5. You want to create a running total of sales that restarts for each Region and sums across Category. Which custom table calculation scope should you use?

hard

A. Compute Using: Category, Restarting every Region

B. Compute Using: Region, Restarting every Category

C. Compute Using: Table (Down)

D. Compute Using: Pane (Across)

Solution

1. Step 1: Understand requirement

   Running total should sum across Category but restart for each Region.

2. Step 2: Set scope to Category and partition by Region

   Setting Compute Using to Category calculates running total across categories. Restarting every Region means partitioning by Region.

3. Step 3: Confirm other options

   Other options do not correctly partition or compute as required.

4. Final Answer:

   Compute Using: Category, Restarting every Region -> Option A

5. Quick Check:

   Scope by Category with restart per Region [OK]

Hint: Compute Using dimension to sum, partition to restart [OK]

Common Mistakes:

• Confusing which dimension to compute using
• Not setting restart partition correctly
• Using Table (Down) which sums entire table