Casio fx-115ES PLUS - Manual (Page 31)

E-30
To select linear regression and input the following data:
(170, 66), (173, 68), (179, 75)
N3(STAT)2(A+BX)
170
= 173 = 179 =ce
66
= 68 = 75 =
Important: • All data currently input in the Stat Editor is deleted whenever
you exit the STAT Mode, switch between the single-variable and a paired-
variable statistical calculation type, or change the Stat Format setting on
the setup menu. • The following operations are not supported by the Stat
Editor:
m, 1m(M–), 1t(STO). Pol, Rec, ÷R, and multi-statements
also cannot be input with the Stat Editor.
To change the data in a cell: In the Stat Editor, move the cursor to the cell
that contains the data you want to change, input the new data, and then
press
=.
To delete a line: In the Stat Editor, move the cursor to the line that you want
to delete and then press
Y.
To insert a line: In the Stat Editor, move the cursor to the location where
you want to insert the line and then perform the following key operation:
11(STAT/DIST)3(Edit)1(Ins).
To delete all Stat Editor contents: In the Stat Editor, perform the following
key operation:
11(STAT/DIST)3(Edit)2(Del-A).
Obtaining Statistical Values from Input Data
To obtain statistical values, press
A while in the Stat Editor and then
recall the statistical variable (
σ
x ,
Σ x 2 , etc.) you want. Supported statistical
variables and the keys you should press to recall them are shown below.
For single-variable statistical calculations, the variables marked with an
asterisk (*) are available.
Sum:
Σ x 2 *,
Σ x *,
Σ y 2 ,
Σ y ,
Σ xy ,
Σ x 3 ,
Σ x 2 y ,
Σ x 4
11(STAT/DIST) 3(Sum) 1 to 8
Number of Items:
n *, Mean:
o
*,
p
, Population Standard Deviation:
σ
x *,
σ
y , Sample Standard Deviation: s x *, s y
11(STAT/DIST) 4(Var) 1 to 7
Regression Coefficients: A, B, Correlation Coefficient:
r , Estimated
Values:
m
,
n
11(STAT/DIST) 5(Reg) 1 to 5
Regression Coefficients for Quadratic Regression: A, B, C, Estimated
Values:
m
1
,
m
2
,
n
11(STAT/DIST) 5(Reg) 1 to 6
• See the table at the beginning of this section of the manual for the regression
formulas.
1 1
STAT STAT
STAT STAT
STAT STAT