Barplot Bar Plots DeltaMethod Confidence Intervals by the Delta Method Dotplot Dot Plots Gumbel The Gumbel Distribution Hist Plot a Histogram KMeans K-Means Clustering Using Multiple Random Seeds assignCluster Append a Cluster Membership Variable to a Dataframe bin.var Bin a Numeric Varisible colPercents Row, Column, and Total Percentage Tables indexplot Index Plots lineplot Plot a one or more lines. mergeRows Function to Merge Rows of Two Data Frames. numSummary Summary Statistics for Numeric Variables partial.cor Partial Correlations plotDistr Plot a probability density, mass, or distribution function. plotMeans Plot Means for One or Two-Way Layout rcorr.adjust Compute Pearson or Spearman Correlations with p-Values readXL Read an Excel File reliability Reliability of a Composite Scale stepwise Stepwise Model Selection summarySandwich Linear Model Summary with Sandwich Standard Errors