Sharp EL738C EL-738 Operation Manual - Page 70

Single-variable statistical calculation

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1 Single-variable statistical calculation Example DATA 95 Key operation m 1 0 . b 95 J Result Stat - 000 DATA SET=100 80 80 J DATA SET=200 80 J 75 75 75 > 3 J 75 50 50 J DATA SET=300 DATA SET=400 DATA SET=500 x = f = -x = 7571 σx = f 2 σ≈= 1237 n = f n n= 700 Σx = f U Í≈= 53000 Σx2 = f [ Í≈Œ= 4120000 sx = f 4 Sx= 1336 sx2 = . ; = ( 95 - i (95 - x ) - sx × 10 + 50 = = ) 8 i 4 x 10 + 50 = SxŒ= 17857 6443 69

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69
Single-variable statistical calculation
Example
Key operation
Result
m
1
0
.
b
Stat
—
000
95
95
J
DATA
SET=
100
80
80
J
DATA
SET=
200
80
J
DATA
SET=
300
75
75
75
75
>
3
J
DATA
SET=
400
50
50
J
DATA
SET=
500
x
=
f
=
–
x
7571
=
σ
x
=
f
2
1237
σ
≈
=
n
=
f
n
700
n
=
Σ
x
=
f
U
53000
Í≈=
Σ
x
2
=
f
[
4120000
Í≈Œ=
sx
=
f
4
1336
Sx
=
sx
2
=
.
;
=
17857
Sx
Œ=
—
×
10 + 50 =
(
95
-
i
=
)
8
i
4
x
10
+
50
=
6443
DATA
1
(95 –
x
)
sx