Inputting Data; Statistical Calculations (Stat) - Casio CALCULATOR FX-85GT PLUS User Manual

Statistical Calculations (STAT)

To start a statistical calculation, perform the key operation
to enter the STAT 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)
Paired-variable (X, Y), linear regression (
Paired-variable (X, Y), quadratic regression
Paired-variable (X, Y), logarithmic regression
Paired-variable (X, Y),
Paired-variable (X, Y),
Paired-variable (X, Y), power regression
Paired-variable (X, Y), inverse regression
Pressing any of the above keys (
Note: When you want to change the calculation type after entering the
STAT Mode, perform the key operation
the calculation type selection screen.

Inputting Data

Use the Stat Editor to input data. Perform the following key operation to
display the Stat Editor:
The Stat Editor provides 80 rows for data input when there is an X column
only, 40 rows when there are X and FREQ columns or X and Y columns, or
26 rows when there are X, Y, and FREQ columns.
Note: Use the FREQ (frequency) column to input the quantity (frequency) of
identical data items. Display of the FREQ column can be turned on (displayed)
or off (not displayed) using the Stat Format setting on the setup menu.
To select linear regression and input the following data:
1 1
(170, 66), (173, 68), (179, 75)
e
exponential regression
ab
exponential regression
(STAT)
(STAT)
170 173
66
y
= A + B
y x
( = A + B + C
y
( = A + Bln
y
( = A
y
( = AB
y
( = A
y
( = A + B/
to ) displays the Stat Editor.
(STAT)
(Data).
(A+BX)
179
68 75
E-21
(1-VAR)
x
(A+BX)
)
( _+CX
x
2
)
(ln X)
x
)
e
( ^X)
x
e
B
)
(A B^X)
•
x
)
x
(A X^B)
B
)
•
(1/X)
x
)
(Type) to display
STAT STAT
STAT STAT
STAT STAT
(STAT)
2
)