Texas Instruments TI-84 Plus - Lingred - (A+Bx); Lnreg - (A+B in(X)); Expreg - (Ax); 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—(aExpReg—(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—(axPwrReg—(ax
PwrReg—(ax
b
)
))
)