Linreg—(A+Bx); Lnreg—(A+B Ln(X)) - Texas Instruments TI-83 Manual Book

[
CubicReg Xlistname , Ylistname , freqlist , regequ
QuartReg—(ax
(quartic regression) fits the fourth-degree polynomial
QuartReg
4 3 2
y=ax +bx +cx
when
DiagnosticOn
the equation is a polynomial fit; for six or more, it is a polynomial
regression. At least five points are required.
[
QuartReg Xlistname , Ylistname , freqlist , regequ
LinReg—(a+bx)
(linear regression) fits the model equation y=a+bx to the data
LinReg(a+bx)
using a least-squares fit. It displays values for
when
DiagnosticOn
[
LinReg(a+bx) Xlistname , Ylistname , freqlist , regequ
LnReg—(a+b ln(x))
(logarithmic regression) fits the model equation y=a+b ln(x) to the
LnReg
data using a least-squares fit and transformed values ln(x) and y. It
displays values for
2
values for and
r
TI-83 Plus Statistics
4 3 2
+bx +cx + dx+e)
+dx+e to the data. It displays values for
is set, it also displays a value for
is set, it also displays values for
and ; when
a b
.
r
]
]
(y-intercept) and
a
]
is set, it also displays
DiagnosticOn
, , , , and
a b c d
2
. For five points,
R
b
2
and .
r r
;
e
(slope);
360