PASCO SPARK Science Learning System Ver. 1.4.0 User's Guide - Manual (Page 82)

7 Data analysis
Analyzing data in a graph
2. Touch the Curve Fit button.
Drawing a prediction
Complete these steps to manually sketch on a graph:
1. Touch the Graph Tools button to open the tool palette.
2. Touch the Prediction button.
3. Do one of the following:
l
Trace a continuous curve on the graph.
l
Touch several locations on the graph to draw a series of connected points.
4. Touch OK.
To delete the prediction, touch the Prediction button again.
Finding the x- and y-values of a point
Complete these steps to select a point on a graph and display its coordinates:
1. If more than one data run is displayed, first select a run:
a. Touch the graph legend.
The legend enlarges.
b. In the legend, touch the symbol of the run that you want to select.
The red outline moves to the selected run.
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