alpha.coef              Coefficient Alpha and Item Statistics
as.na                   Replace User-Specified Values With Missing
                        Values
center                  Centering at the Grand Mean or Centering Within
                        Cluster
ci.mean                 Confidence Interval for the Arithmetic Mean
ci.mean.diff            Confidence Interval for the Difference in
                        Arithmetic Means
ci.median               Confidence Interval for the Median
ci.prop                 Confidence Interval for Proportions
ci.prop.diff            Confidence Interval for the Difference in
                        Proportions
ci.sd                   Confidence Interval for the Standard Deviation
ci.var                  Confidence Interval for the Variance
cohens.d                Cohen's d for Between- and Within-Subject
                        Design
cont.coef               Pearson's Contingency Coefficient
cor.matrix              Correlation Matrix with Statistical
                        Significance Testing
cramers.v               Cramer's V
crosstab                Cross Tabulation
descript                Descriptive Statistics
df.merge                Merge Multiple Data Frames
df.rbind                Combine Data Frames by Rows, Filling in Missing
                        Columns
df.rename               Rename Columns in a Matrix or Variables in a
                        Data Frame
df.sort                 Data Frame Sorting
dummy.c                 Dummy Coding
eta.sq                  Eta Squared
freq                    Frequency Tables
group.scores            Group Scores
kurtosis                Excess Kurtosis
levenes.test            Levene's Test for Homogeneity of Variance
multilevel.descript     Multilevel Descriptive Statistics
multilevel.icc          Intraclass Correlation Coefficient, ICC(1) and
                        ICC(2)
na.as                   Replace Missing Values With User-Specified
                        Values
na.auxiliary            Auxiliary variables
na.coverage             Variance-Covariance Coverage
na.descript             Descriptive Statistics for Missing Data
na.indicator            Missing Data Indicator Matrix
na.pattern              Missing Data Pattern
na.prop                 Proportion of Missing Data for Each Case
omega.coef              Coefficient Omega, Hierarchical Omega, and
                        Categorical Omega
phi.coef                Phi Coefficient
poly.cor                Polychoric Correlation Matrix
print.ci                Print ci object
print.coef              Print coef object
print.cohens.d          Print cohens.d object
print.cor.matrix        Print cor.matrix object
print.crosstab          Print crosstab
print.descript          Print descript object
print.eta.sq            Print eta.sq object
print.freq              Print freq object
print.multilevel.descript
                        Print multilevel.descript object
print.na.descript       Print na.descript
print.na.pattern        Print na.pattern
print.size              Print size object
print.square.matrix     Print square.matrix object
print.test              Print test object
read.mplus              Read Mplus Data File and Variable Names
read.sav                Read SPSS File
read.xlsx               Read Excel File
rec                     Recode Variable
reverse.item            Reverse Code Scale Item
run.mplus               Run Mplus Models
rwg.lindell             Lindell, Brandt and Whitney (1999) r*wg(j)
                        Within-Group Agreement Index for Multi-Item
                        Scales
scores                  Compute Scale Scores
size.cor                Sample Size Determination for Testing Pearson's
                        Correlation Coefficient
size.mean               Sample Size Determination for Testing
                        Arithmetic Means
size.prop               Sample Size Determination for Testing
                        Proportions
skewness                Skewness
stromit                 Omit Strings
trim                    Trim Whispace from String
write.mplus             Write Mplus Data File
write.sav               Write SPSS File
