Casio fx-115ES, fx-991ES Commands when Quadratic Regression Calculation (_+CX2) Is Selected, menu item:, menu item:, Select this, Select this, Reg Sub-menu(11(STAT)7(Reg))

Reg Sub-menu (11(STAT)7(Reg))

Select this	When you want to obtain this:
menu item:
1A	Regression coefficient constant term A
2B	Regression coefficient B
3r	Correlation coefficient r
4m	Estimated value of x
5n	Estimated value of y

Appendix Linear Regression Calculation: <#061> to <#064>

•Examples <#062> through <#064> all use the data input in Example

<#061>.

*1 Estimated Value (y = –3 → m = ?) *2 Estimated Value (x = 2 → n = ?)

Commands when Quadratic Regression Calculation (_+CX2) Is Selected

With quadratic regression, regression is performed in accordance with the following model equation.

y = A + BX + CX2

See Appendix <#065> for information about the calculation formula used for each command.

Reg Sub-menu (11(STAT)7(Reg))

Select this	When you want to obtain this:
menu item:
1A	Regression coefficient constant term A
2B	Linear coefficient B of the regression coefficients
3C	Quadratic coefficient C of the regression
	coefficients
4m1	Estimated value of x1
5m2	Estimated value of x2
6n	Estimated value of y

•Sum sub-menu (sums), Var sub-menu (number of samples, mean, standard deviation), and MinMax sub-menu (maximum value, minimum value) operations are the same those for linear regression calculations.

Appendix Quadratic Regression Calculation: <#066> to <#068>

•Examples <#066> through <#068> all use the data input in Example <#061>.

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