Pasco SPARK Science Learning System Ver. 1.4.0 User' Manual de usuario Pagina 82

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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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