TI-83 Plus Statistics 361
LnReg [Xlistname,Ylistname,freqlist,regequ]
ExpReg—(abx)
ExpReg (exponential regression) fits the model equation y=abx 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 r2
and r.
ExpReg [Xlistname,Ylistname,freqlist,regequ]
PwrReg—(axb)
PwrReg (power regression) fits the model equation y=axb to the data using
a least-squares fit and transformed values ln(x) and ln(y). It displays
values for a and b; when DiagnosticOn is set, it also displays values for r2
and r.
PwrReg [Xlistname,Ylistname,freqlist,regequ]
Logistic—c/(1+aäeLbx)
Logistic fits the model equation y=c/(1+aäeLbx) to the data using an
iterative least-squares fit. It displays values for a, b, and c.
Logistic [Xlistname,Ylistname,freqlist,regequ]