Tools to Deal with Interval-Valued Responses in Questionnaires

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Documentation for package ‘IntervalQuestionStat’ version 0.2.0

• DESCRIPTION file.
• Package NEWS.

Help Pages

IntervalQuestionStat-package	Tools to Deal with Interval-Valued Responses in Questionnaires
*-method	Interval arithmetic operations
+-method	Interval arithmetic operations
--method	Interval arithmetic operations
apply	Apply functions over 'IntervalMatrix' margins
apply-method	Apply functions over 'IntervalMatrix' margins
arithmetic	Interval arithmetic operations
as.IntervalData	Convert a real number into a degenerate interval
as.IntervalData-method	Convert a real number into a degenerate interval
as.IntervalList	Convert a single interval to a list of intervals
as.IntervalList-method	Convert a single interval to a list of intervals
c	Combine 'IntervalData' and 'IntervalList' objects
c-method	Combine 'IntervalData' and 'IntervalList' objects
cbind	Combine 'IntervalList' and 'IntervalMatrix' objects by columns
cbind-method	Combine 'IntervalList' and 'IntervalMatrix' objects by columns
cov	Calculate the sample covariance between two random intervals
cov-method	Calculate the sample covariance between two random intervals
cronbach	Estimate sample Cronbach's alpha coefficient
dim	Get the number of rows and columns of an 'IntervalMatrix' object
dim-method	Get the number of rows and columns of an 'IntervalMatrix' object
distance	Calculate the theta-distance between two intervals
distance-method	Calculate the theta-distance between two intervals
extract	Extract and replace parts of an interval-valued object
IntervalData	Create an 'IntervalData' object
IntervalData-class	S4 class representing a single interval
IntervalDataOrIntervalList-class	Virtual union of 'IntervalData' and 'IntervalList' classes
IntervalList	Create an 'IntervalList' object
IntervalList-class	S4 class representing a list of intervals
IntervalListOrIntervalMatrix-class	Virtual union of 'IntervalList' and 'IntervalMatrix' classes
IntervalMatrix	Create an 'IntervalMatrix' object
IntervalMatrix-class	S4 class representing a matrix of intervals
ivs2likert	Convert interval-valued responses into their equivalent numerically encoded Likert-type scale answers with minimum theta-distance criterion
ivs2likert-method	Convert interval-valued responses into their equivalent numerically encoded Likert-type scale answers with minimum theta-distance criterion
ivs2vas	Convert interval-valued responses into equivalent visual analogue scale answers through mid-point criterion
ivs2vas-method	Convert interval-valued responses into equivalent visual analogue scale answers through mid-point criterion
lackinfo	Lack of information in expository face-to-face lessons data set
length	Get the length of an 'IntervalList' object
length-method	Get the length of an 'IntervalList' object
mean	Calculate the sample Aumann mean of a random interval
mean-method	Calculate the sample Aumann mean of a random interval
mid	Extract and replace the mid-points of interval-valued objects
mid-method	Extract and replace the mid-points of interval-valued objects
mid<-	Extract and replace the mid-points of interval-valued objects
mid<--method	Extract and replace the mid-points of interval-valued objects
ncol	Get the number of columns of an 'IntervalMatrix' object
ncol-method	Get the number of columns of an 'IntervalMatrix' object
nrow	Get the number of rows of an 'IntervalMatrix' object
nrow-method	Get the number of rows of an 'IntervalMatrix' object
plot	Plot a single interval or a list of intervals
plot-method	Plot a single interval or a list of intervals
rbind	Combine 'IntervalList' and 'IntervalMatrix' objects by rows
rbind-method	Combine 'IntervalList' and 'IntervalMatrix' objects by rows
show	Print basic information of interval-valued data
show-method	Print basic information of interval-valued data
simulIVS	Simulation of interval-valued responses to a questionnaire
spr	Extract and replace the spreads of interval-valued objects
spr-method	Extract and replace the spreads of interval-valued objects
spr<-	Extract and replace the spreads of interval-valued objects
spr<--method	Extract and replace the spreads of interval-valued objects
sum	Calculate the sum of n intervals
sum-method	Calculate the sum of n intervals
var	Calculate the sample Fréchet variance of a random interval
var-method	Calculate the sample Fréchet variance of a random interval
[-method	Extract and replace parts of an interval-valued object
[<--method	Extract and replace parts of an interval-valued object
[[-method	Extract and replace parts of an interval-valued object
[[<--method	Extract and replace parts of an interval-valued object