Vernier Software & Technology LQ2-LE Manuel D’Utilisation

LabQuest App 
 

 

    

20 

 

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 – The Integral tool numerically 

integrates graphed data. Select a region, if 
needed, then choose Integral from the Analyze 
menu. Enable the tool by tapping on the 
displayed sensor or column name. The integral 
will be drawn, and the numeric result will be 
displayed to the right of the graph. 

 
 
 

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 – The Statistics tool displays statistics 

for graphed data. Select a region, if needed, and 
then choose Statistics from the Analyze menu. 
Enable the tool by tapping on the displayed 
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 

 

 

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 – The Delta tool opens a preview window 

where you can examine x- and y-deltas. Choose 
Delta from the Analyze menu to open the 
preview window. Then tap-and-drag to create a 
box overlaid on the graph. The vertical side of 
the box yields 

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y, and the horizontal side of the 

box yields 

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x. Tap OK to keep these values and 

display the box on the Graph screen. To exit the 
Delta tool without displaying the box on  the 
Graph screen, tap Cancel. 

 

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 – The Curve Fit tool allows you to 

automatically fit a chosen function to your data. 
If a region of the graph is selected, only that 
region is used for fitting. If there is no selection, 
the entire graph is used.  

 

Enabling the curve fit displays a Curve Fit 
dialog box. Choose the desired fit equation from 
the drop-down menu. Upon choosing the fit 
equation, LabQuest will display the fit in the 
preview graph at left. The fit coefficients and Root Mean Square Error (RMSE) are also 
displayed. Tap OK to keep this fit and display the curve on the Graph screen. To exit the 
Curve Fit tool without applying the curve, tap Cancel.