
Graphing
Linear regression uses the method of least squares to determine the equation that best fits your data points, and returns values for the slope and
uClassPad Operation
Start the graphing operation from the Statistics application’s Graph window or List window.
From the Graph window
Tap [Calc] [Linear Reg] [OK] [OK] ".
From the List window
Tap [SetGraph] [Setting…], or G.
On the Set StatGraphs dialog box that appears, configure a StatGraph setup with the setting shown below, and then tap [Set].
Type: LinearR
Tap yto draw the graph.
The following is the linear regression model formula. y = a·x + b
a : regression coefficient (slope)
b : regression constant term
r : correlation coefficient
r2 : coefficient of determination
MSe : mean square error
•MSe = n 1 2 Σn (yi – (a·xi+ b))2–i=1
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