LogisticD
Catalog >
LogisticD
X
,
Y
[
,
[
Iterations
]
,
[
Freq
] [
,
Category
,
Include
] ]
Computes the logistic regression y = (c/
(1+a
•
e
-bx
)+d) on lists
X
and
Y
with frequency
Freq
, using a specified number of
Iterations
. A summary of results is stored in
the
stat.results
variable. (See page 172.)
All the lists must have equal dimension
except for
Include
.
X
and
Y
are lists of independent and
dependent variables.
Freq
is an optional list of frequency values.
Each element in
Freq
specifies the
frequency of occurrence for each
corresponding
X
and
Y
data point. The
default value is 1. All elements must be
integers
≥
0.
Category
is a list of category codes for the
corresponding
X
and
Y
data.
Include
is a list of one or more of the
category codes. Only those data items
whose category code is included in this list
are included in the calculation.
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 232.
Output
variable
Description
stat.RegEqn
Regression equation: c/(1+a
•
e
-bx
)+d)
stat.a, stat.b,
stat.c, stat.d
Regression coefficients
stat.Resid
Residuals from the regression
stat.XReg
List of data points in the modified
X List
actually used in the regression based on
restrictions of
Freq
,
Category List
, and
Include Categories
stat.YReg
List of data points in the modified
Y List
actually used in the regression based on
restrictions of
Freq
,
Category List
, and
Include Categories
stat.FreqReg
List of frequencies corresponding to
stat.XReg
and
stat.YReg
Alphabetical Listing
107
Содержание TI-Nspire CAS
Страница 4: ...4 Service and Warranty Information 249 Index 251 ...
Страница 248: ...248 ...
Страница 250: ...250 ...