addNAstr                Transform missing values of a factor to an
                        extra level
chisq.residuals         Return the chi-squared residuals of a two-way
                        frequency table.
clipcopy                Transform an object into HTML and copy it for
                        export
cprop                   Column percentages of a two-way frequency
                        table.
cramer.v                Compute Cramer's V of a two-way frequency table
cross.multi.table       Two-way frequency table between a multiple
                        choices question and a factor
describe                Describe the variables of a dataset in R, SPSS
                        or Stata formats
duplicated2             Determine all duplicate elements
format.proptab          S3 format method for proptab objects.
freq                    Generate frequency tables.
freq.na                 Generate frequency table of missing values.
happy                   Data related to happiness from the General
                        Social Survey, 1972-2006.
hdv2003                 Histoire de vie 2003
icut                    Interactive conversion from numeric to factor
iorder                  Interactive reordering of factor levels
irec                    Interactive recoding
lookfor                 Look for keywords variable names and
                        descriptions
multi.split             Split a multiple choices variable in a series
                        of binary variables
multi.table             One-way frequency table for multiple choices
                        question
na.rm                   Remove observations with missing values
odds.ratio              Odds Ratio
print.proptab           S3 print method for proptab objects.
prop                    Global percentages of a two-way frequency
                        table.
qload                   Load one or more packages, installing them
                        first if necessary
qscan                   Scan R scripts and load/install all detected
                        packages
quant.cut               Transform a quantitative variable into a
                        qualitative variable
questionr               questionr
recode.na               Recode values of a variable to missing values,
                        using exact or regular expression matching.
rename.variable         Rename a data frame column
rm.unused.levels        Remove unused levels
rp99                    1999 French Census - Cities from the Rhône
                        state
rprop                   Row percentages of a two-way frequency table.
wtd.mean                Weighted mean and variance of a vector
wtd.table               Weighted one-way and two-way frequency tables.
