| center |
Centering Predictor Variables in Single-Level and Multilevel Data |
| cfa.satcor |
Fit a Saturated Correlates Model |
| check.collin |
Collinearity Diagnostics |
| check.outlier |
Statistical Measures for Leverage, Distance, and Influence |
| check.resid |
Residual Diagnostics for Linear, Multilevel and Mixed-Effects Models |
| chr.color |
Colored and Styled Terminal Output Text |
| chr.grep |
Multiple Pattern Matching |
| chr.grepl |
Multiple Pattern Matching |
| chr.gsub |
Multiple Pattern Matching And Replacements |
| chr.omit |
Omit Strings |
| chr.trim |
Trim Whitespace from String |
| chr.trunc |
Truncate a Character Vector to a Maximum Width |
| ci.cor |
(Bootstrap) Confidence Intervals for Correlation Coefficients |
| ci.mean |
(Bootstrap) Confidence Intervals for Arithmetic Means and Medians |
| ci.mean.diff |
Confidence Interval for the Difference in Arithmetic Means |
| ci.mean.diff.default |
Confidence Interval for the Difference in Arithmetic Means |
| ci.mean.diff.formula |
Confidence Interval for the Difference in Arithmetic Means |
| ci.mean.w |
Within-Subject Confidence Interval for the Arithmetic Mean |
| ci.median |
(Bootstrap) Confidence Intervals for Arithmetic Means and Medians |
| ci.prop |
(Bootstrap) Confidence Intervals for Proportions |
| ci.prop.diff |
Confidence Interval for the Difference in Proportions |
| ci.prop.diff.default |
Confidence Interval for the Difference in Proportions |
| ci.prop.diff.formula |
Confidence Interval for the Difference in Proportions |
| ci.sd |
(Bootstrap) Confidence Intervals for Variances and Standard Deviations |
| ci.var |
(Bootstrap) Confidence Intervals for Variances and Standard Deviations |
| clear |
Clear Console in RStudio |
| cluster.rwg |
Lindell, Brandt and Whitney (1999) r*wg(j) Within-Group Agreement Index for Multi-Item Scales |
| cluster.scores |
Cluster Scores |
| coding |
Coding Categorical Variables |
| coeff.robust |
Heteroscedasticity-Consistent and Cluster-Robust Standard Errors |
| coeff.std |
Standardized Coefficients for Linear, Multilevel and Mixed-Effects Models |
| cohens.d |
Cohen's d |
| cohens.d.default |
Cohen's d |
| cohens.d.formula |
Cohen's d |
| cor.matrix |
Correlation Matrix |
| crosstab |
Cross Tabulation |
| data.items |
Multiple-Choice, Dichotomous, and Polytomous Item Data |
| descript |
Descriptive Statistics |
| df.check |
Data Check |
| df.duplicated |
Extract Duplicated or Unique Rows |
| df.head |
Print the First and Last Rows of a Data Frame |
| df.long |
Converting Data Frames Between 'Wide' and 'Long' Format |
| df.merge |
Merge Multiple Data Frames |
| df.move |
Move Variable(s) in a Data Frame |
| 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 |
| df.subset |
Subsetting Data Frames |
| df.tail |
Print the First and Last Rows of a Data Frame |
| df.unique |
Extract Duplicated or Unique Rows |
| df.wide |
Converting Data Frames Between 'Wide' and 'Long' Format |
| difftest.chibarsq |
Chi-Bar-Square Difference Test |
| dominance |
Dominance Analysis |
| dominance.manual |
Dominance Analysis, Manually Inputting a Correlation Matrix |
| indirect |
Confidence Intervals for the Indirect Effect |
| item.alpha |
Coefficient Alpha, Hierarchical Alpha, and Ordinal Alpha |
| item.cfa |
Confirmatory Factor Analysis |
| item.dfi |
Dynamic Fit Index Cutoffs |
| item.distract |
Distractor Analysis for Multiple-Choice Items |
| item.invar |
Between-Group and Longitudinal Measurement Invariance Evaluation |
| item.noninvar |
Effect Size Measure of Measurement Non-Invariance, dMACS |
| item.omega |
Coefficient Omega, Hierarchical Omega, and Categorical Omega |
| item.reverse |
Reverse Code Scale Item |
| item.scores |
Scale Scores |
| item.stats |
Item Analysis for Dichotomous, Polytomous, and Continuous Items |
| script.close |
Open, Close and Save R Script in RStudio |
| script.copy |
Save Copy of the Current Script in RStudio |
| script.new |
Open new R Script, R Markdown script, or SQL Script in RStudio |
| script.open |
Open, Close and Save R Script in RStudio |
| script.save |
Open, Close and Save R Script in RStudio |
| sem.satcor |
Fit a Saturated Correlates Model |
| setsource |
Set Working Directory to the Source File Location |
| sim.lavaan |
Generates Simulated Data from a lavaan Model Syntax |
| size.cor |
Sample Size Determination |
| size.mean |
Sample Size Determination |
| size.prop |
Sample Size Determination |
| skewness |
Univariate and Multivariate Skewness and Kurtosis |
| summa |
Print Summary Output |