Casio FX-85ES PLUS User Manual

Using Calculation Modes
Statistical Calculations (ST
AT)
To start a statistical calculation, perform the key operation
(STAT)
to enter the ST
AT Mode and then use the screen that appears to select the
type of calculation you want to perform.
To select this type of statistical calculation:
(Regression formula shown in parentheses)
Press this key:
Single-variable (X) (1-VAR)
Paired-variable (X, Y), linear regression
(y = A + Bx)
(A+BX)
Paired-variable (X, Y), quadratic regression
(y = A + Bx + Cx
2
)
(_+CX
2
)
Paired-variable (X, Y), logarithmic regression
(y = A + Blnx)
(ln X)
Paired-variable (X, Y), e exponential
regression
(y = A e
Bx
)
(e
∧
X)
Paired-variable (X, Y), ab
exponential
regression
(y = AB
x
)
(A•B
∧
X)
Paired-variable (X, Y), power regression
(y = Ax
B
)
(A•X
∧
B)
Paired-variable (X, Y), inverse regression
(y = A + B/x)
(1/X)
Pressing any of the above keys (
to ) displays the Statistics Editor.
36

Casio FX-85ES PLUS Specifications

General

Type	Scientific
Form factor	Pocket
USB port	No
Operation	256
Digits	12 digits
Display number of lines	- lines
Battery type	LR44
Power source	Battery/Solar
Auto power off	Yes
Battery life (max)	27300 h

Weight and Dimensions

Depth	161 mm
Width	80 mm
Height	12.2 mm
Weight	105 g