Sharp EL-9900 Operation Manual page 254

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