You can add formulas to create or modify data in your data table. **Note: Column formulas do NOT preserve significant figures. Read more on that here.**

## Step 0: (Optional) Make an empty column for your calculation.

Click the three vertical buttons on the right of the column heading.

Select

*Insert Column Right.*Give the new column a name, variable, and units.

## Step 1: Change the Column Formula

Click the three vertical buttons on the right of the column heading again.

Select

*Change Column Formula.*Use the calculator tool to create a formula.

Features of the Calculator:

Select your data columns from the box on the right.

Click the buttons on the calculator to create your formula.

The

**rate of change**function acts as a derivative function.Use the

(clear) button to make changes.*C*Click

to complete the formula.*Submit*

**Note:** Formulas can be based on any column that is to the left of it in the data table. Columns cannot use data that is to the *right* of the calculated column.