Package index • lsr

Hypothesis tests

Wrapper functions for common statistical tests used in introductory courses, with output designed to be readable by beginners.

oneSampleTTest(): One sample t-test
independentSamplesTTest(): Independent samples t-test
pairedSamplesTTest(): Paired samples t-test
associationTest(): Chi-square test of association / independence
goodnessOfFitTest(): Chi-square goodness of fit test
posthocPairwiseT(): Post-hoc pairwise t-tests for ANOVA
print(<TTest>): Print t-test results
print(<assocTest>): Print chi-square association test results
print(<gofTest>): Print goodness of fit test results

Effect sizes and descriptive statistics

Functions for computing effect sizes and summarising data, intended as companions to the hypothesis test functions above.

cohensD(): Cohen's d
etaSquared(): Effect size for ANOVAs
cramersV(): Cramer's V
ciMean(): Confidence interval around the mean
correlate(): Correlation matrices
print(<correlate>): Print correlation matrix results

Data manipulation

Functions for reshaping, reordering, and recoding data frames and factors.

wideToLong(): Reshape from wide to long
longToWide(): Reshape from long to wide
expandFactors(): Expand factors to a set of contrasts
permuteLevels(): Permute the levels of a factor
quantileCut(): Cut by quantiles
sortFrame(): Sort a data frame
tFrame(): Transpose a data frame
colCopy() rowCopy(): Copy a vector into a matrix

Visualisation

A simple plotting function for displaying frequency and proportion data as bar charts.

bars(): Grouped bar plots with error bars

Workspace utilities

Helper functions for inspecting and managing the R workspace, and for miscellaneous statistical tasks not covered elsewhere.

who(): Contents of workspace
modeOf() maxFreq(): Sample mode
aad(): Mean absolute deviation
rmAll(): Remove all objects from the workspace
unlibrary(): Unload a package
importList(): Import a list into the workspace
standardCoefs(): Standardised regression coefficients
print(<whoList>): Print workspace summary