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Linear Regression Calculation (y=a+bx)
Commands
With linear regression, regression is performed in accordance with the
following model equation.
y = a + bx
The following is the calculation formula used for each command.
Summation Sub-menu ( (Summation))
Select this menu
item:
When you want to obtain this:
(Σx)
Sum of the x-data
(Σx
2
)
Sum of squares of the x-data
(Σy)
Sum of the y-data
(Σy
2
)
Sum of squares of the y-data
72
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