Formulas
Introduction
Formulas can be used to calculate list values. All input values for the formula must come from the same list. If the value that you want to calculate needs to be part of many lists or the calculations are multi dimensional you can consider using Cube Calculations instead.
Create a Formula
There are two places where you can create a Formula. When you create a List Item you can click 
 or in the Lists itself, you can click
 to open the Formula Editor.
CONTENT
You can choose several types of Formulas:
| Type | Description | Formula | Option |
|---|---|---|---|
| Summation | Sum | (Item+Item+Item+etc.) | Â |
| SummationRange | Sum Range | (Item:Item) | Â |
| Average | Average | (Item, Item, Item, etc.) | Â |
| AverageRange | Average Range | (Item:Item) | Â |
| Variance | Variance | (Item-Item) | Absolute / Relative |
| Ratio | Ratio | (Item/Item) | Absolute / Percentage |
| Multiplier | Multiplier | (Item*Item) | Â |
Subtracting two values
The formula editors does not include a subtract function. In order to subtract one value from another, the user should choose the Summation formula and click on the 
sign which will change onto 
The Average Range and Summation Range do not show the exact averages and summations
The AverageRange and SummationRange functions calculate the average or the  summation of a range of items in a list, with one exception: when an item is set to invisible, it is not included in the AverageRange or SummationRange total.
So in the case where these functions do not show the correct value, please check the visible settings of the rows included in the range.
Add a description to a formula
To add a description to a formula, enter the description in the Custom Description field of the Item List.