PASCO SPARK Science Learning System User's Guide - Manual (Page 46)

38 D ATA ANALYSIS
A NALYZING DATA IN A GRAPH
5. Optionally, touch the arrows of the point selector to change which
point is selected.
Touch the Select button again to clear the selection.
Finding the x- and y-difference between two points
Complete these steps to select a range of points and display the change-in-x and
change-in-y between the first and last points in the selected range:
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.
2. Touch the Graph Tools button to open the tool palette.
3. Touch the Select button.
The button turns orange.
4. Touch somewhere on the graph; then, within one second, touch
somewhere else on the graph.
The two locations that you touch define the corners of a selection box.
A selection box appears. Data points inside the box are highlighted.
5. Optionally, adjust the size and position of the selection box by
dragging the handles at the corners of the box.
6. When the desired data points are highlighted, touch OK.
The selection box disappears, but the points remain selected.