Linreg-(a+bx), Lnreg-(a+b ln(x)), Expreg-(abx) – Texas Instruments TI-84 User Manual
Page 313: Pwrreg-(axb)
Chapter 12: Statistics
310
QuartReg
[
Xlistname,Ylistname,freqlist,regequ
]
LinReg—(a+bx)
LinReg—(a+bx)
LinReg—(a+bx)
LinReg—(a+bx)
LinReg(a+bx)
(linear regression) fits the model equation y=a+bx to the data using a least-
squares fit. It displays values for
a
(y-intercept) and
b
(slope); when
DiagnosticOn
is set, it
also displays values for
r
2
and
r
.
LinReg(a+bx)
[
Xlistname,Ylistname,freqlist,regequ
]
LnReg—(a+b ln(x))
LnReg—(a+b ln(x))
LnReg—(a+b ln(x))
LnReg—(a+b ln(x))
LnReg
(logarithmic regression) fits the model equation y=a+b ln(x) to the data using a
least-squares fit and transformed values ln(x) and y. It displays values for
a
and
b
; when
DiagnosticOn
is set, it also displays values for
r
2
and
r
.
LnReg
[
Xlistname,Ylistname,freqlist,regequ
]
ExpReg—(a
ExpReg—(a
ExpReg—(a
ExpReg—(ab
bb
b
x
))))
ExpReg
(exponential regression) fits the model equation y=ab
x
to the data using a least-
squares fit and transformed values x and ln(y). It displays values for
a
and
b
; when
DiagnosticOn
is set, it also displays values for
r
2
and
r
.
ExpReg
[
Xlistname,Ylistname,freqlist,regequ
]
PwrReg—(ax
PwrReg—(ax
PwrReg—(ax
PwrReg—(ax
b
))))