PASCO SPARKvue ver.2.0 - Manual (Page 90)

The button changes color.
4. Click and drag to select data points.
5. When the desired data points are highlighted, click done selecting.
6. Click the Select button.
7. Click the Coordinates button.
An annotation with the following information appears on the graph:
l
The x- and y-values of the first point in the selected range (x1 and y1),
l
The x- and y-values of the last point in the selected range (x2 and y2), and
l
The x- and y-differences between those two points (dx and dy).
8. To clear the annotation, click the Coordinates button again.
9. To clear the selection, click the Select button again.
Finding the slope at a point on a data plot
Complete these steps to display the slope at a selected point:
1. Optional: select a different data run.
In the display legend, a red outline surrounds the run that is selected for operation.
Complete these steps to change which run is selected:
i. Click the legend.
The legend enlarges.
ii. In the legend, click the symbol (but not the check box) of the run that you
want to select.
Document Number: 012-11074D 78
SPARKvue
®
7 Data analysis
Analyzing data in a graph