Texas Instruments NS/CLM/1L1/B Reference Guide - Page 34

ExpReg, Catalog &gt, Output variable, Description, factor

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ExpReg ExpReg X, Y [, [Freq] [, Category, Include]] Calculates the exponential regression. A summary of results is stored in the stat.results variable. (See page 76.) All the arguments must have equal dimensions except for Include. X represents xlist. Y represents ylist. Freq represents frequency list. Cetegory represents category codes. Include represents category include list. Catalog > Output variable stat.RegEqn stat.a, stat.b stat.r2 stat.r stat.Resid stat.ResidTrans stat.XReg stat.YReg stat.FreqReg Description Regression equation: a·(b)x. Regression coefficients: y = a·(b)x. Coefficient of determination. Correlation coefficient for linear model. Residuals of the curves fit = y - a·(b)x. Residuals associated with linear fit of transformed data. List of data points in the modified X List actually used in the regression based on restrictions of Freq, Category List, and Include Categories. List of data points in the modified Y List actually used in the regression based on restrictions of Freq, Category List, and Include Categories. List of frequencies corresponding to stat.XReg and stat.YReg. F factor( ) factor(rationalNumber) returns the rational number factored into primes. For composite numbers, the computing time grows exponentially with the number of digits in the second-largest factor. For example, factoring a 30-digit integer could take more than a day, and factoring a 100-digit number could take more than a century. w Note: To stop (break) a computation, press . If you merely want to determine if a number is prime, use isPrime() instead. It is much faster, particularly if rationalNumber is not prime and if the second-largest factor has more than five digits. Catalog > 28 TI-Nspire™ Reference Guide

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28
TI-Nspire™ Reference Guide
F
ExpReg
Catalog >
ExpReg
X, Y
[
,
[
Freq
]
[
, Category, Include
]]
Calculates the exponential regression. A summary of results is stored
in the
stat.results
variable. (See page 76.)
All the arguments must have equal dimensions except for
Include
.
X
represents xlist.
Y
represents ylist.
Freq
represents frequency list.
Cetegory
represents category codes.
Include
represents category include list.
Output variable
Description
stat.RegEqn
Regression equation: a
·
(b)
x
.
stat.a, stat.b
Regression coefficients: y = a
·
(b)
x
.
stat.r
2
Coefficient of determination.
stat.r
Correlation coefficient for linear model.
stat.Resid
Residuals of the curves fit = y - a
·
(b)
x
.
stat.ResidTrans
Residuals associated with linear fit of transformed data.
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
.
factor()
Catalog >
factor(
rationalNumber
)
returns the rational number factored into
primes. For composite numbers, the computing time grows
exponentially with the number of digits in the second-largest factor.
For example, factoring a 30-digit integer could take more than a day,
and factoring a 100-digit number could take more than a century.
Note:
To stop (break) a computation, press
w
.
If you merely want to determine if a number is prime, use
isPrime()
instead. It is much faster, particularly if
rationalNumber
is not prime
and if the second-largest factor has more than five digits.