Casio fx-3650P II User Manual page 33

k
Performing Paired-variable Statistical Calculations
To perform the example operations in this section, first select REG as the calculation mode.
A Regression Calculation Types
Each time you enter the REG Mode, you must select the type of regression calculation you
plan to perform.
Selecting the Regression Calculation Type
1. Enter the REG Mode.
• This displays the initial regression calculation selection menu. The menu has two
screens, and you can use d and e to navigate between them.
2. Perform one of the following operations to select the regression calculation you want.
To select this regression type:
y a
Linear ( = +
y
Logarithmic (
e
Exponential (
b
Power ( y = ax
y a
Inverse ( =
y
Quadratic ( =
ab
Exponential (
Note
You can switch to another regression calculation type from within the REG Mode, if you
want. Pressing 12 (S-VAR) 3 (TYPE) will display a menu screen like the one shown in
step 1 above. Perform the same operation as the above procedure to select the regression
calculation type you want.
A Inputting Sample Data
Frequency On (FreqOn)
The following shows the key operations required when inputting class values (
y ), ...( xn , yn ), and frequencies Freq1, Freq2, ... Freq
2
} , { } 1, (;) {Freq1} m (DT)
x y
{
1 1
} , {
} 1, (;) {Freq2} m (DT)
x y
{
2 2
} , { } 1, (;) {Freq
xn yn
{
Note
If the frequency of a class value is only one, you can input it by pressing {
only (without specifying the frequency).
bx
)
a b x
= + In )
bx
y ae
= )
)
b x
+ / )
2
a bx cx
+ + )
x
y ab
= )
} m (DT)
n
And press this key:
1 (Lin)
2 (Log)
3 (Exp)
4 (Pwr)
e 1 (Inv)
e 2 (Quad)
e 3 (AB-Exp)
n .
E-32
x y x
, ), ( ,
1 1 2
} , { } m (DT)
xn yn