67
Editing statistical data
Change the pre
viously entered data from page 65 as f
ollo
ws:
Pr
ocedure
K
e
y
operation
Displa
y
Displa
y the statistical
data.
i
X1=
3000
Change the
“40, 2”
data
set to
“45, 3”.
i
i
45
J
i
3
J
FRQ2=
300
Delete “50”.
i
.
?
Stat
—
000
Add “60”.
60
J
DATA
SET=
300
Statistical Calculations and
V
ariab
les
The f
ollo
wing results can be obtained f
or each statistical calcula-
tion (ref
er to the tab
le belo
w):
Single-v
ariab
le statistical calculations
Section
results only
.
Linear regression calculations
Section
and
results
, e
xcept f
or coeffi
cients
c
.
The estimate of
y
f
or a giv
en
x
(estimate
y
´) and the estimate of
x
f
or a giv
en
y
(estimate
x
´) can also be f
ound.
Quadratic regression calculation
Section
and
results
, and coeffi
cients
a
,
b
, and
c
in the qua-
dr
atic reg
ression f
o
rm
ula (
y
=
a
+
bx
+
cx
2
).
In quadr
atic reg
res-
sion calculations
, no correlation coeffi
cient
r
can be obtained.
DATA
30
40
40
50
DATA
30
45
45
45
60
5 Statistical Calculations.indd 67
06.7.10 8:03:39 PM
