Casio fx-7400G PLUS Booklet

– 69 –
Z-3Using a Graphic Calculator
(Determining the Slope of a Line)
Graphing
Press Q1(GRPH) 1(GPH1) to display the graph
(scatter diagram).
Linear Regression
Pressing 1(X) 4(DRAW) performs linear regression
and overlays it onto the scatter diagram as shown on the
screen nearby. Pressing 1 displays the slope, which is the
value indicated for “a =”.
Calculation of the slope and other information from the obtained data is performed using linear
regression. Though the actual calculation is quite complex and difficult to perform, the graphic
calculator performs linear regression in an instant and provides the slope and y-intercept.

Casio fx-7400G PLUS Specifications

General

Model	fx-7400G PLUS
Category	Graphing Calculator
Display	LCD
Display Lines	8
Display Characters	21
Memory	28 KB
Power Supply	Battery
Programming	Yes
Graphing	Yes
Equation Solver	Yes
Statistical Functions	Yes
Connectivity	No
Battery	AAA x 4