Sharp EL-9900 - Manual (Page 254)

244
Appendix
Function Calculation range Notes
x
_
sx
σx
r
b
a
y’
x’
Same for y
_
, sy and
σy
Regression calcula-
tions excluding 2nd,
3rd, and 4th degree
polynomials.
Same as above.
Same as b for other.
n
≠ 0
n > 1
| Σx| < 1 ×
10 50
0 ≤
( Σx) 2
n
Σx 2 –
n – 1
< 1
×
10 100
n > 0
| Σx| < 1 ×
10 50
0 ≤
( Σx) 2
n
Σx 2 –
n
< 1
×
10 100
n > 0
| Σx| < 1 ×
10 50
|
Σy| < 1 ×
10 50
0 < ( Σx 2 –
( Σx) 2
n
) ( Σy 2 –
( Σy) 2
n
) <1
×
10 100
| Σxy –
ΣxΣy
n
| < 1
×
10 100
< 1
×
10 100
n > 0
| Σx| < 1 ×
10 50
|( Σx) (Σy)| < 1 ×
10 100
0 < | Σx 2 –
( Σx) 2
n
| < 1
×
10 100
| Σxy –
ΣxΣy
n
| < 1
×
10 100
< 1
×
10 100
|bx
_
| < 1
×
10 100
|y
_
– bx
_
| < 1
×
10 100
|bx| < 1
×
10 100
|a + bx| < 1
×
10 100
|y – a| < 1
×
10 100
|
y – a
b
| < 1
Ч
10 100