Casio CFX-9800G - Page 71

™@ Power Regression :
The power foatession formula is. defined as.y=A¢x® (Iny=InA+Binx).
@To input ‘data for power regression
Input data using the:same procedures as. described. for. fsa regression on:page 104.
To delete data
Delete data.using the same procedures as described for linear regression on page 104.
‘The followihg shows the difference between linear regression results and power regres-
sion results.
Linear Regression | Power Regression a
Dx Linx
Lx? L(Inx)?
ry Einy
Ly E(Iny
Ixy Llnxiny
To Enter the Regression Mode with Data Storage
Highlight the REG icon on the Main Menu_and then ‘press ©@. ty
Press (6](SET) to make the set up display appear. Next, use the procedure on page 24
to specify the type of regression you want to perform.
[och
; fice naar |
(Fa (F2) FS) (Fa)
Use the procedure on page 23 specify STO-for the statistical data (S-data).
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Press (ml), and the paired-variable-statistical-:menu appears on the display.
RUN “ LIN-REG
S-data :570 :
S-srarh: NON-
S-Plot =! ORANGE
G-tyre 'REC-CON
: Ansle . 'Dea
*This is the display that appears after you select
linear (LIN) regression.
FT] F2) {Fa} Fa) (FS) FS)
The following are the operations that are available from the function display at the bottom
of the screen. Press the function key below the operation, you want to perform.
ENON) . Inputs data
. Displays an-edit function menu (EDIT)
F3)(,) . . Inputs comma between x- and y-data
(F(DEV) . Statistical menu
(F5)(Z) .... . Sum data menu
FA(REG) wee Regression/estimated. value n menu
*Dx?, Dx, n, Ly?, Ly, and Lxy data are stored in their own memory area, and so they
do not use value memories.
®To input data :
The following input procedures can be used to fo input data for linear, logantnmni; exponential,
and power regression.
Example 1] To input the data 10/20, 20/30, 20/30, 40/50
Before actually beginning data input; use the following sequence to delete
any statistical data stored in memory. *-:
(EDIT)
F3)(ERS)
Fi)(YES)
1063)
(,)20
=] (DT)
20(3)
(,)30|
(DT)
Fi)(DT)
40(F3)
(,)50)
Fi}(DT)
Example-2| To input the data
1063)
(,)20
(DT)
2063)
(,)30
wr 5 |
Fi)(DT)
4063)
(,)50
Fi} (DT)
Note that you can input multipte data pairs by entering the data, pressing Ma
then entering the number of data pairs.
©To edit data
10/20, 20/30, 20/30, 20/30, 20/30, 20/30, 40/50
, and
To change, delete, insert, or clear data, press [F2)(EDIT) to display the edit function menu
and then perform the same procedures as those described for single-variable data on °
pages 99 to 101.
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