Sharp EL738C EL-738 Operation Manual - Page 72
Quadratic regression calculation
UPC - 074000018518
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3 Quadratic regression calculation Example DATA xy 12 41 Key operation m 1 2 12 > 41 J 8 13 8 > 13 J 5 2 5>2J 23 200 23 > 200 J 15 71 15 > 71 J a = f a b = f b c = f a x = 10 y´ = ? 10 . ? y = 22 x´ = ? 22 . 9 @ @ Result Stat 2 000 DATA SET=100 DATA SET=200 DATA SET=300 DATA SET=400 DATA SET=500 a= 536 b= -312 c= 050 10y´ 2449 ≈¡= 963 ≈™= -343 ≈¡= 963 71
71
Quadratic regression calculation
Example
Key operation
Result
x
y
m
1
2
Stat
2
000
12
41
12
>
41
J
DATA
SET=
100
8
13
8
>
13
J
DATA
SET=
200
5
2
5
>
2
J
DATA
SET=
300
23
200
23
>
200
J
DATA
SET=
400
15
71
15
>
71
J
DATA
SET=
500
a
=
f
a
536
a
=
b
=
f
b
-312
b
=
c
=
f
a
050
c
=
x
= 10
y´
= ?
10
.
?
2449
10y´
y
= 22
x´
= ?
22
.
9
@
@
963
≈¡=
-343
≈™=
963
≈¡=
3
DATA