Casio FX-911W - Data Input Precautions; Regression Calculations (REG Mode); Linear Regression; Quadratic Regression

Data
Input
Precautions
•
(H)
(SJ
inputs
the
same
data
twice.
•
You
can
also
input
multiple
entries
of the
same
data
us-
ing
B
CD.
To
input
the
data
1
1 0 ten
times,
for
example,
press
110
BCD
1013.
•
The
above
results
can
be
obtained
in
any
order,
and
not
necessarily
that
shown
above.
•
To
delete
data
you
have
just
input,
press.
SCsD.
Regression
Calculations
(REG
Mode)
•
Press
B
B
CD
(fx-85W)
to
enter
the
REG
mode
and
then
select
one of
the
following
regression
types.
For
other
models,
press
B
GD.
CD:
Linear
regression
CD:
Logarithmic
regression
CD:
Exponential
regression
(BCD:
Power
regression
QE) CD:
Inverse
regression
GE
GD:
Quadratic
regression
•
Data
input
always
starts
with
B
dD
B
to
clear
statisti-
cal
memory.
• 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.
©CD
Zx
2
B
B
SID
CD
Zx
b
gd
V
(mTJCD
n
B®
J*.
(mi)
qq
Iv
2
sb
SE3CE3
Zy
BCD
Regression
coefficient
A
S3
CD
Zxv
BCD
Regression
coefficient
B
GsDCE)
I*
3
Regression
coefficient
C
GeDCD
X**y
©CD
Correlation
coefficient
r
GsD
CD.
£x*
BCD
em
Jt
bcs
b®
.
»20«
Data
Input
Precautions
•
S3
S3
inputs
the
same
data
twice.
•
Yqu
^^°
N**
multiple
entries
of
the
same
data
us-
ing
S
CD/Tb
input
the
data
110
ten
times,
for
example,
press
110
SCO
10
S3.
• The
above
results
can
be
obtained
inany
order,
and
not
necessarily
that
shown
above.
'
•
To
delete
data
you
have
just
input
press
B
GOD.
Regression
Calculations
(REG
Mode)
-
•
Press
S S
S3 (fx-85W)
to
enter
the
REG
mode
and
then
select
one
of
the
following
.regression
types.
For
other
models,
press
B
GD.
"'..*"
CD:
Linear
regression
GD:
Logarithmic
regression
CD:
Exponential
regression
(BCD:
Power
regression
GE3
CD?
Inverse
regression
(B CD:
Quadratic
regression
•
Data
input
always
starts
with
B
(ED
B
to
dear
statisti-
cal
memory.
• The
values
produced
by a
regression
calculation
depend
on the
values
input,
and
results
can
be
recalled
using
•
the kev onerations shown in tna taKiA k^w.
(ED
CD
I
213
BS
(59
GD
Zx
bcd
BOD
n
'
®
®
BGD
Zv
2
B
B
BCD
2v
bcd
Regression
coefficient
A
BCD
Zxy
bcd
Regression
coefficient
B
BGD
Lx
3
sen
Regression
coefficient
C
BCD
Zx*y
bcd
Correlation
coefficient
r
Zx
4
BCD
i
BSD
bce
bb
•20*
•
Linear
Regression
The regression formula
for linear
regression
is:
v
«
A + Bx.
•
Example:
Atmospheric
Pressure vs.
Temperature
Perform
linear
regression
to
deter-
mine
the
regression
formula terms
and correlation
coefficient
for the
dat^€ajt>:NeAt;
lasa ther^.*,*
siori
formula
to estimate
atmos-
pheric
pressure
at
18°C
and tem-
perature
at 1000 hPa.
Temperature
Atmospheric
Pressure
10°C
1003 hPa
15°C
.1005
hPa
2G-*G-
-1
010 hrtT
25°C 1011 hPa
30°C
1014 hPa
Enter REG
Mode (Linear Regression)
fx-85W:BBCDCD
Other models:
SCD CD
@
GEO
B
(Memory
Clear)
10(ZJ1003(I3
15GD1005
S3
20CD 1010(13
25(Z]1011(13
30 GD
101
4 S3
30.
(Regression
Coefficient A)
(Regression Coefficient
B)
(Correlation Coefficient
r)
(Atmospheric
Pressure
at
irq
18
@
CD
I
997.4
BI2B[
bcdbQ
BCDB
I
0.982607368
(Temperature
at 1000
hPa)
1
000 B23
[
4.642857143
0.56
I
1007.48
•
Quadratic
Regression
'
•
The regression
formula
for
quadratic
regression
is:
vaA
+
av+Gv*.
•
Input data using
the
following key
sequence.
<v-data>
CD <v-data> 13
•
Linear
Regression
The regression formula
for
linear
regression
is:
y
*
A
-f Br.
•
Example:
Atmospheric
Pressure
vs.
Temperature
Perform
linear
regression
to
deter-
mine the
regression
formula
terms
and
correlation
coefficient
for the
data
nearby. Next,
use the regres-
sion formula
to "estimate atmos-
pheric
pressure
at
18°C
and
tem-
perature
at 1000 hPa.
Temperature
10°C
^Pressure*
0
1003 hPa
15*C 1005 hPa
20»G-
25*C
*
1010 frPa
.
1011 hPa
30°C 1014
hPa
Enter REG Mode (Linear
Regression)
fx-85w:
e
SCD CD
Other
models:
BGD CD
S
(ED
B
(Memory
Clear)
10CD1003I13
15CD1005(I3
20GD 1010
S3
25(131011(13
3oG3iOH(I3
KG
30.
SQB
bcdsI
(Temparalureat lOOOhPa)
1000
B
CD
I
4*642857143
997.4
(Regression Coefficient A)
(Regression
Coefficient
B)
(Coirelaiic«
Coefficient)
BCD
B
|
0.98260736^1
0.56
(Atmospheric Pressure
at 18*C)
18BCS
|
1007.48"
•
Quadratic
Regression
•
The regression
formula
for
quadratic
regression
is:
y
»
A
+
Ox +G«*.
'
•
input data using the
following
key sequence.
<r-data>
CD
<v-data>
13
•21
21