## Step 1: Set up your data table and enter data

You can enter column headings for the data table by clicking on each field in the column heading and typing values: • Column name: text name for the quantity in this column
• units: the units of measurement for this quantity if the column is a number
• variable: an abbreviated name for the quantity, such as t for time, or T for temperature.

Click the three dot menu on a row or column to see what options you have: • Column Settings lets you configure how data is displayed, such as numerical or text, how many significant figures, scientific notation etc. (more: using a column for text, formatting numerical columns)
• Change Column Formula lets you use a formula to calculate values for this column. more...
• Insert Column Right, Insert Column Left, or Remove Column

## Step 2: Add more columns, and create columns with formulas ## Step 3: Create your Graph

Once you've got your data collected you can set up your graph: You can plot multiple columns on the Y axis. When you click on the Vertical Axis to configure it, you's get an option to "Add Columns" and can then choose up to 5 columns.

## Step 4: Apply a Curve Fit

If you want to see if your data follows a mathematical pattern, you can use a curve fit: In the previous version of the graphing tool there was a button for linear regression. That has been replaced by the following steps:

• click the cog at the upper right of the graph
• select Curve Fit
• choose Linear
• click Done
• The equation for the line will appear below the graph with curve fit parameters A and B
• "A" represents the slope of the line.
• "B" represents the y-intercept of the line
• RMSE stands for Root Mean Squared Error and it tells you how closely the fit matches the data. A lower RMSE generally means a closer fit.
• To display uncertainty with the fit, check the Display Curve Fit Uncertainty box. You can click on data points on the graph to include/exclude them from the curve fit calculations.

Lastly, here are instructions on converting a position vs time graph to a velocity vs time graph