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E-28
r
e
Regression Calculations
Use the F key to enter the REG Mode when you want to perform
statistical calculations using regression.
REG ..........................................................................................F F 2
•Entering the REG Mode displays screens like the ones shown below.
To recall this type of value: Perform this key operation:
Σx
2
A U 1
Σx A
U 2
n A
U 3
Σy
2
A U r 1
Σy A
U r 2
Σxy A
U r 3
o A
X 1
xσ
n
A X 2
xσ
n
-1 A X 3
p
A
X r 1
REG
1
2
3
Lin Log
E
xp
1
2
3
P
w
r Inv
Q
uad
•Press the number key (
1, 2, or 3) that corresponds to the type of
regression you want to use.
1 (Lin)
:Linear regression
2 (Log)
: Logarithmic regression
3 (Exp)
:Exponential regression
r 1 (Pwr)
:Power regression
r 2 (Inv)
:Inverse regression
r 3 (Quad)
:Quadratic regression
•Always start data input with A B 1
(Scl) < to clear statistical memory.
•Input data using the key sequence shown below.
<x-data> P <y-data> S
•The values produced by a regression calculation depend on the values
input, and results can be recalled using the key operations shown in the
table below.
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