Reg sub-menu, Reg sub-menu ( (stat) (reg)) – HP 300s Scientific Calculator User Manual
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= A + Bx + Cx
2
Reg Sub-menu ( (STAT) (Reg))
Sum sub-menu (sums), Var sum-menu (number of samples,
mean, standard deviation), and MinMax sub-menu (maximum
value, minimum value) operations are the same those for
linear regression calculations.
Quadratic Regression Calculation
For example:
All the data used as the following table:
Select this menu item: When you want to obtain this:
A
Regression coefficient constant term A
B
Linear coefficient B of the regression
coefficients
C
Quadratic coefficient C of the regression
coefficients
Estimated value of x1
Estimated value of x2
Estimated value of y
x
y
x
y
1.0
1.0
2.1
1.5
1.2
1.1
2.4
1.6
1.5
1.2
2.5
1.7
1.6
1.3
2.7
1.8
1.9
1.4
3.0
2.0
Sx
2
x
2
x
4
x
2
(
)
2
n
------------------
–
=
Sx
2
y
x
2
y
x
2
y
•
n
-------------------------
–
=
xˆ1
B
–
B
2
4C A y
–
(
)
–
+
2C
--------------------------------------------------------
=
xˆ2
B
–
B
2
4C A y
–
(
)
–
–
2C
--------------------------------------------------------
=
yˆ
xˆ1
xˆ2
yˆ