Vernier Original LabQuest - Manual (Page 16)

LabQuest Reference
14
Strike Through Data/Restore Data
The Strike Through Data option allows you to ignore selected data. Struck data are ignored
for analysis and graphing. Select a region on the graph, then choose Strike Through Data.
The data are ignored. To reverse this action, choose Restore Data.
Autoscale Once
Autoscale Once will set the graph ranges so that all points are plotted.
Zoom In/Zoom Out
You can view a smaller region of the graph by dragging across it to select, and choosing
Zoom In. Zoom Out will reverse that zoom.
Analyze Menu
The Analyze menu gives access to additional tools such
as tangent lines, integrals, statistics and curve fits. Those
functions that depend on a set of data will operate on
either the whole graph or just a portion of the data, as
selected by dragging the stylus across the graph. If no
selection is made, the calculation will use the entire
range.
The analysis information is shown on the right side of the screen. Scroll arrows will appear if
needed. Tap the analysis information to show the values on a detail dialog for ease of
reading.
The functions that include a checkbox for a sensor or column name are toggles. To enable
the function, choose the sensor or column name. To disable the function, choose the sensor
or column name a second time.
Tangent
The Tangent mode enhances the Examine cursor by
adding a tangent line and numeric display of slope as
you tap locations on the graph.
Integral
Select a region if needed, and then choose Integral,
followed by the sensor or column name. The Integral
will be drawn, and the numeric result displayed to the
right of the graph.
Statistics
Select a region if needed, and then choose Statistics,
followed by the sensor or column name. Descriptive
statistics will be displayed to the right of the graph. If a
region is selected, brackets are drawn to indicate the
region used for calculations.