L.19a_-_Calculations

What is the significance of data types in Tableau formulas?

Data types must match for operations to work correctly; mixing types may lead to errors.

What function does a quick table calculation serve in Tableau?

It allows you to apply a built-in calculation to your visualization using pre-set configurations.

What is a running total calculation in Tableau?

It adds totals across a table, providing cumulative values over a specified period.

How does Tableau determine the order of calculations by default?

It uses the structure of the visualization, such as the order of columns, to determine calculation order.

What is the difference between Fields and Parameters in Tableau?

Fields come from data sources and cannot be changed by users, while parameters can be created and modified by users.

How can you create calculated fields in Tableau?

By adding a new column in your dataset to calculate values that are essential but not available.

What must be done when utilizing fields of different data types in Tableau?

One or both fields need to be converted to the same type using type conversion functions.

What comparison operator is used to check if two values are not equal in Tableau?

The != or <> operator.

What is an example of using a comparison operator in Tableau?

Using '5 = 15/3' to check if both expressions are equal.

What is the role of Boolean values in Tableau expressions?

Boolean values represent TRUE or FALSE outcomes from comparisons.

Why is hard coding constants discouraged in Tableau?

It leads to difficulties in updates, maintenance challenges, and lower auditability.

What does the 'Compute Using' option affect in Tableau calculations?

It determines how calculations are performed based on the visualization structure.

What syntax is required when using fields and parameters in Tableau formulas?

Fields or parameters must be enclosed in brackets [FieldName] and named exactly.

What is a moving average in Tableau?

An average value calculated based on a range around the current value to smooth fluctuations.

What mathematical operator is used to concatenate strings in Tableau?

The addition sign '+' can concatenate strings.

What does a Percent of Total calculation do in Tableau?

It computes a value as a percentage of all values within the table structure.

What does the term 'YTD' refer to in Tableau calculations?

YTD stands for Year-To-Date, calculating totals from the beginning of the year.

What do you need to properly designate when plugging in values in Tableau formulas?

The data type of the value, such as string, number, date, or Boolean.

What common mistake must be avoided when performing date operations in Tableau?

Mixing date formats or date types in calculations that could lead to errors.

What is a key purpose of using table calculations in Tableau?

To modify how Tableau treats data without changing the actual data source.