Casio fx-115ES Appendix

–26–
#072
#073
A = exp
( )
n
Σ
lny – B
.
Σlnx
B =
n
.
Σ
(
ln
x
)
2
–
(
Σlnx
)
2
n
.
Σ
lnxln
y
– Σ
lnx
.
Σlny
r
=
{n
.
Σ
(
ln
x
)
2
–
(
Σlnx
)
2
}{n
.
Σ
(
ln
y
)
2
–
(
Σlny
)
2
}
n
.
Σ
lnxln
y
– Σ
lnx
.
Σ
lny
m = e
B
ln y – ln A
n = Ax
B
A =
n
Σy
– B
.
Σx
–1
B =
Sxx
Sxy
r
=
Sxx = Σ ( x
–1
)
2
–
Syy = Σy
2
–
Sxy = Σ ( x
–1
) y –
Sxx
.
Syy
Sxy
n
( Σx
–1
)
2
n
Σx
–1
.
Σy
m =
y – A
B
n = A +
x
B
n
( Σy )
2

Casio fx-115ES Specifications

General

Type	Scientific
Cover	Yes
Form factor	Pocket
Control type	Buttons
Product color	Silver
Housing material	Plastic
Digits	12 digits
Display tilting	-
Backlight display	No
Display number of lines	2 lines
Power source	Battery/Solar
Memory registers	7