Sharp EL738C EL-738 Operation Manual - Page 71
Linear regression calculation
UPC - 074000018518
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2 Linear regression calculation Example DATA xy 25 Key operation m 1 1 2 > 5 J 25 J 12 24 12 > 24 J 21 40 21 40 21 > 40 > 3 J 21 40 15 25 15 > 25 J a = f a b = f b r = f r sx = f 4 sy = f 5 x = 3 y´ = ? 3 . ? y = 46 x´ = ? 46 . 9 Result Stat 1 000 DATA SET=100 DATA SET=200 DATA SET=300 DATA SET=400 DATA SET=500 a= 105 b= 183 r= 100 Sx= 854 Sy= 1567 3y´ 653 46x´ 2462 70
70
Linear regression calculation
Example
Key operation
Result
x
y
m
1
1
Stat
1
000
2
5
2
>
5
J
DATA
SET=
100
2
5
J
DATA
SET=
200
12
24
12
>
24
J
DATA
SET=
300
21
21
21
40
40
40
21
>
40
>
3
J
DATA
SET=
400
15
25
15
>
25
J
DATA
SET=
500
a
=
f
a
105
a
=
b
=
f
b
183
b
=
r
=
f
r
100
r
=
sx
=
f
4
854
Sx
=
sy
=
f
5
1567
Sy
=
x
= 3
y´
= ?
3
.
?
653
3y´
y
= 46
x´
= ?
46
.
9
2462
46x´
DATA
2