166 Alphabetical Listing
SinReg
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All the lists must have equal dimension
except for Include.
X and Y are lists of independent and
dependent variables.
Iterations is a value that specifies the
maximum number of times (1 through 16) a
solution will be attempted. If omitted, 8 is
used. Typically, larger values result in better
accuracy but longer execution times, and
vice versa.
Period specifies an estimated period. If
omitted, the difference between values in X
should be equal and in sequential order. If
you specify Period, the differences between
x values can be unequal.
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.
The output of SinReg is always in radians,
regardless of the angle mode setting.
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 232.
Output
variable
Description
stat.RegEqn
Regression Equation: a•sin(bx+c)+d
stat.a, stat.b,
stat.c, stat.d
Regression coefficients
stat.Resid Residuals from the regression
stat.XReg
Listof data points in the modifiedX List actually used in the regression based on
restrictions of Freq, Category List, and Include Categories
stat.YReg
Listof data points in the modifiedY List actually used inthe regression basedon
restrictions of Freq, Category List, and Include Categories
stat.FreqReg
Listof frequencies corresponding to stat.XReg and stat.YReg
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