Final answer:
Subtotal is an example of an index number, which is a statistical measure used to represent changes in variables over time.
Step-by-step explanation:
Subtotal is an example of a formula because it uses the amounts of the lines above to calculate its amount. In financial or spreadsheet contexts, a subtotal typically represents the sum or total of a specific set of values or data points. The calculation involves adding the amounts of the lines or items above it to arrive at the subtotal.
In the context of spreadsheets or financial calculations, a "Subtotal" is a function or formula that calculates the sum or total of a specific range of values. It's often used to obtain subtotals within a larger dataset.
For example, if you have a column of numbers representing sales figures, you might use the Subtotal function to calculate the total sales for a specific category or region. The Subtotal function allows you to perform calculations on a subset of data, and it updates dynamically as the data changes.
In spreadsheet software like Microsoft Excel, you can use the Subtotal function to perform various calculations, such as summing, averaging, counting, etc., on a filtered range of data.