PASCO SPARK Science Learning System Ver. 1.4.0 User's Guide - Manual (Page 86)

7 Data analysis
Analyzing data in a graph
A red outline appears around the selected run.
3. Touch the Graph Tools button to open the tool palette.
The line graphs tools palette displays.
4. Touch the CurveFit button.
The Select Desired Curve Fit screen displays.
5. Touch the Linear Fit button, and touch OK.
The statistics appear on the line graph and the Curve Fit button appears orange.
6. To move the statistics box, drag it.
7. To remove the statistics box, touch the orange Curve Fit button.
The statistics are removed from the line graph.
Displaying the RMSE Root-Mean-Square Error
To find the Root Mean Square Error (RMSE):
If more than one data measurement run is displayed, first select a measurement run:
1. Touch the line graph legend.
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