Texas Instruments TI-84 PLUS SILV Guidebook - Page 210
PwrReg-ax, Logistic-c/1+a, SinReg-a sinbx+c+d, ExpReg, PwrReg, DiagnosticOn, Logistic, SinReg
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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+a...e-bx) Logistic fits the model equation y=c/(1+a...eLbx) to the data using an iterative least-squares fit. It displays values for a, b, and c. Logistic [Xlistname,Ylistname,freqlist,regequ] SinReg-a sin(bx+c)+d SinReg (sinusoidal regression) fits the model equation y=a sin(bx+c)+d to the data using an iterative least-squares fit. It displays values for a, b, c, and d. At least four data points are required. At least two data points per cycle are required in order to avoid aliased frequency estimates. Chapter 12: Statistics 203