Quadreg; Quartreg - Texas Instruments TI-NSPIRE Reference Manual

QuadReg

X Y Freq
QuadReg , [, ] [,
Calculates the quadratic polynomial regression. A summary of results
is stored in the stat.results variable. (See page 76.)
All the arguments must have equal dimensions except for Include.
X represents xlist.
Y represents ylist.
Freq represents frequency list.
Category represents category codes.
Include represents category include list.
Output variable
stat.RegEqn
stat.a, stat.b, stat.c
2
stat.R
stat.Resid
stat.XReg
stat.YReg
stat.FreqReg

QuartReg

X Y Freq
QuartReg , [, ] [,
Calculates the quartic polynomial regression. A summary of results is
stored in the stat.results variable. (See page 76.)
All the arguments must have equal dimensions except for Include.
X represents xlist.
Y represents ylist.
Freq represents frequency list.
Category represents category codes.
Include represents category include list.
Output variable
stat.RegEqn
stat.a, stat.b, stat.c,
stat.d, stat.e
2
stat.R
stat.Resid
stat.XReg
stat.YReg
62
Category Include
, ]]
Description
·
2
Regression equation: a x +b
Regression coefficients.
Coefficient of determination.
Residuals of the curves fit = y - (a
List of data points in the modified X List actually used in the regression based on restrictions of Freq,
Category List, and Include Categories.
List of data points in the modified Y List actually used in the regression based on restrictions of Freq,
Category List, and Include Categories.
List of frequencies corresponding to stat.XReg and stat.YReg.
Category Include
, ]]
Description
·
4
Regression equation: a x +b
Regression coefficients.
Coefficient of determination.
Residuals of the curves fit = y - (a
List of data points in the modified X List actually used in the regression based on restrictions of Freq,
Category List, and Include Categories.
List of data points in the modified Y List actually used in the regression based on restrictions of Freq,
Category List, and Include Categories.
·
x+c.
· ·
2
x +b x+c).
· · ·
3 2
x +c x +d x+e.
· · · ·
4 3 2
x +b x +c x +d x+e).
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