Logistic - C/(1+A*E-Bx); Sinreg - A Sin(Bx+C)+D - Texas Instruments TI-84 Plus Manual Book

(power regression) fits the model equation y=ax
PwrReg
squares fit and transformed values ln(x) and ln(y). It displays values for
is set, it also displays values for
DiagnosticOn
[
PwrReg Xlistname,Ylistname,freqlist,regequ
Logistic—c/ Logistic— c/ (1+a (1+a...e e e e
Logistic— Logistic— c/ c/ (1+a (1+a
fits the model equation y=c/(1+a...e
Logistic
fit. It displays values for
[
Logistic
Xlistname,Ylistname,freqlist,regequ
SinReg—a sin(bx+c)+d SinReg—a sin(bx+c)+d SinReg—a sin(bx+c)+d SinReg—a sin(bx+c)+d
(sinusoidal regression) fits the model equation y=a sin(bx+c)+d to the data using
SinReg
an iterative least-squares fit. It displays values for
are required. At least two data points per cycle are required in order to avoid aliased
frequency estimates.
[ ,
SinReg iterations Xlistname
is the maximum number of times the algorithm will iterate to find a solution. The
iterations
can be an integer ‚ 1 and  16; if not specified, the default is 3. The
value for
iterations
algorithm may find a solution before
result in longer execution times and better accuracy for
iterations
A guess is optional. If you do not specify
period
in must be equal and the time values must be ordered in ascending sequential
Xlistname
Chapter 12: Statistics
]
-bx
) ) ) )
, , and .
a b c
]
, , ,
Ylistname period regequ
iterations
b
to the data using a least-
2
and .
r r
L
bx
) to the data using an iterative least-squares
, , , and
a b c
]
is reached. Typically, larger values for
, the difference between time values
period
and ; when
a b
. At least four data points
d
, and vice versa.
SinReg
311