E-50
Commands when Linear Regression Calculation
(A+BX) Is Selected
With linear regression, regression is performed in accordance with
the following model equation.
y
=
A
+
BX
The following are the commands that appear on the sub-menus that
appear when you select
4
(Sum),
5
(Var),
6
(MinMax), or
7
(Reg) on the STAT menu while linear regression is selected as
the statistical calculation type.
See
Appendix
<#060> for information about the calculation
formula used for each command.
Sum Sub-menu (
1
1
(STAT)
4
(Sum))
Select this
When you want to obtain this:
menu item:
1
Σ
x
2
Sum of squares of the X-data
2
Σ
x
Sum of the X-data
3
Σ
y
2
Sum of squares of the Y-data
4
Σ
y
Sum of the Y-data
5
Σ
xy
Sum of products of the X-data and Y-data
6
Σ
x
3
Sum of cubes of the X-data
7
Σ
x
2
y
Sum of (X-data squares
×
Y-data)
8
Σ
x
4
Sum of biquadrate of the X-data
Var Sub-menu (
1
1
(STAT)
5
(Var))
Select this
When you want to obtain this:
menu item:
1
n
Number of samples
2
o
Mean of the X-data
3
x
σ
n
Population standard deviation of the X-data
4
x
σ
n
–1
Sample standard deviation of the X-data
5
p
Mean of the Y-data
6
y
σ
n
Population standard deviation of the Y-data
7
y
σ
n
–1
Sample standard deviation of the Y-data
MinMax Sub-menu (
1
1
(STAT)
6
(MinMax))
Select this
When you want to obtain this:
menu item:
1
minX
Minimum value of the X-data
2
maxX
Maximum value of the X-data
3
minY
Minimum value of the Y-data
4
maxY
Maximum value of the Y-data