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Example
Data 55, 54, 51, 55, 53, 53, 54,
MODE
52
SHIFT
55
SHIFT
SHIFT
SHIFT
ALPHA
ALPHA
ALPHA
To calculate the deviation of the
(cont.)
unbiased variance, the difference
between each datum, and mean of
55
the above data
54
51
SHIFT
To calculate x and σ
1 for
110
n-1
130
the following data.
150
Class no. Value Frequency
170
1
110
10
190
2
130
31
ALPHA
3
150
24
SHIFT
4
170
2
SHIFT
5
190
3
*** Erroneous data clearing / correction I (correct data operation: 51
1)
If 50
is entered, enter correct data after pressing
DT
2)
If 49
was input a number of entries previously, enter correct data after pressing 49
DT
*** Erroneous data clearing / correction II (correct data operation: 130
1)
If 120
SHIFT
2)
If 120
SHIFT
3)
If 120
SHIFT
4)
If 120
SHIFT
30
;
CL
2.5.2 Regression calculation
Regression calculations are performed in the LR mode (
G
Before beginning calculations, the tabulation memories are cleared by pressing
G
by
and then
Scl
Individual data are entered as x data
G
Multiple data of the same value can be entered by repeatedly pressing
G
also be performed by entering x data
representing the number of times the data is repeated, and then
Copyright L
2002
EXIBOOK
Key Operation
x
(Clears memory)
Scl
EXE
DT
54
DT
51
DT
55
53
54
52
DT
DT
DT
DT
xσ
EXE
n
xσ
EXE
n-1
x
EXE
W
EXE
V
EXE
U
EXE
xσ
SHIFT
x
2
EXE
n-1
-
x
SHIFT
EXE
-
x
SHIFT
EXE
-
x
SHIFT
EXE
...
Scl
EXE
;
10
DT
SHIFT
;
31
SHIFT
DT
;
24
SHIFT
DT
DT
DT
DT
DT
DT
W
EXE
x
EXE
xσ
EXE
n-1
is entered, enter correct data after pressing
;
31 is entered, enter correct data after pressing
;
30
is entered, enter correct data after pressing
;
DT
30
was entered previously, enter correct data after pressing
;
DT
.
.
EXE
y data
,
SHIFT
y data
,
SHIFT
Display
Remark
*** You can press the
function keys to obtain
52.
results in any sequence
1.316956719
Standard deviation sn
1.407885953
Standard deviation sn-1
53.375
Mean x
8.
Number of data n
Sum total Σx
427.
Sum of squares Σx
22805.
2
1.982142857
1.625
0.625
-2.375
...
110.
130.
150.
170.
190.
70.
137.7142857
18.42898069
)
DT
.
CL
CL
31
)
;
SHIFT
DT
.
AC
.
AC
.
CL
SHIFT
÷
), "LR" appears on the display.
MODE
f o l l o w e d
SHIFT
.
DT
. This operation can
DT
ollowed by a value
;
SHIFT
.
DT
- 33 -
GB
.
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