Casio FX300MS User Guide - Page 26

Regression Calculations - quadratic

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Regression Calculations REG Use the F key to enter the REG Mode when you want to perform statistical calculations using regression. REG F 3 • In the SD Mode and REG Mode, the | key operates as the S key. • Entering the REG Mode displays screens like the ones shown below. L i n Log Ex p 1 23 re Pw r I nv Quad 1 23 • Press the number key (1, 2, or 3) that corresponds to the type of regression you want to use. 1 (Lin) : Linear regression 2 (Log) : Logarithmic regression 3 (Exp) : Exponential regression r 1 (Pwr) : Power regression r 2 (Inv) : Inverse regression r 3 (Quad) : Quadratic regression • Always start data input with A B 1(Scl) = to clear statistical memory. • Input data using the key sequence shown below. P S • The values produced by a regression calculation depend on the values input, and results can be recalled using the key operations shown in the table below. E-24

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E-24
Regression Calculations
Use the
F
key to enter the REG Mode when you want
to perform statistical calculations using regression.
REG
................................................................
F
3
•
In the SD Mode and REG Mode, the
|
key operates as
the
S
key.
•
Entering the REG Mode displays screens like the ones
shown below.
•
Press the number key (
1
,
2
, or
3
) that corresponds
to the type of regression you want to use.
1
(Lin)
:
Linear regression
2
(Log)
:
Logarithmic regression
3
(Exp)
:
Exponential regression
r
1
(Pwr)
:
Power regression
r
2
(Inv)
:
Inverse regression
r
3
(Quad)
: Quadratic regression
•
Always start data input with
A
B
1
(Scl)
=
to clear
statistical memory.
•
Input data using the key sequence shown below.
<
x
-data>
P
<
y
-data>
S
•
The values produced by a regression calculation depend
on the values input, and results can be recalled using
the key operations shown in the table below.
1
2
3
L i n Log
E
xp
1
2
3
P
w
r Inv
Q
uad
r
e
REG