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lessR (version 3.3.3)

Less Code, More Results

Description

Each function accomplishes the work of several or more standard R functions. For example, two function calls, Read() and CountAll(), read the data and generate summary statistics for all variables in the data frame, plus histograms and bar charts as appropriate. Other functions provide for descriptive statistics, a comprehensive regression analysis, analysis of variance and t-test, plotting, bar chart, histogram, box plot, density curves, calibrated power curve, reading multiple data formats with the same function, variable labels, color themes, and a built-in help system. A confirmatory factor analysis of multiple indicator measurement models is also available as are pedagogical routines for data simulation such as for the Central Limit Theorem. Compatible with RStudio and knitr including generation of knitr instructions for interpretative output.

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Version

Install

install.packages('lessR')

Monthly Downloads

2,884

Version

3.3.3

License

GPL (>= 2)

Maintainer

David W Gerbing

Last Published

July 24th, 2015

Functions in lessR (3.3.3)

CountAll

CountAll Descriptive Analysis of all Variables in the Data Frame
Nest

Nest the Values of an Integer or Factor Variable
dataEmployee

Data: Employees
Transform

Transform the Values of an Integer or Factor Variable
Read

Read Contents of a Data File with Optional Variable Labels and Feedback
Model

Regression Analysis, ANOVA or t-test
dataReading

Data: Reading Ability
corReorder

Reorder Variables in a Correlation Matrix
corScree

Eigenvalue Plot of a Correlation Matrix
simCLT

Pedagogical Simulation for the Central Limit Theorem
Help

Help System for Statistics by Topic that Suggests Related Functions
SummaryStats

Summary Statistics for One or Two Variables
PieChart

Pie Chart
corRead

Read Specified Correlation Matrix
Write

Write the Contents of a Data Frame to an External File
Correlation

Correlation Analysis
LineChart

Line Chart such as a Run Chart or Time-Series Chart
showColors

Display All Named R Colors and Corresponding rgb Values
simCImean

Pedagogical Simulation for the Confidence Interval of the Mean
Subset

Subset the Values of an Integer or Factor Variable
ttestPower

Compute a Power Curve for a One or Two Group t-test
Density

Density Curves from Data plus Histogram
ANOVA

Analysis of Variance
xP

Text Processing: Print Formatted Numbers
xU

Text Processing: Capitalize First Letter of a Word
dataLearn

Data: Distributed vs Massed Practice
Recode

Recode the Values of an Integer or Factor Variable
corProp

Proportionality Coefficients from Correlations
ttest

Generic Method for t-test and Standardized Mean Difference with Enhanced Graphics
dataJackets

Data: Motorcycle Type and Thickness of Jacket
BoxPlot

Boxplot
xW

Text Processing: Wrap Words to Create New Lines From a Specified Line
prob.norm

Compute and Plot Normal Curve Probabilities over an Interval
print.out_all

Disply All Text Output from a Saved List Object
Logit

Logit Regression Analysis
ScatterPlot

Scatterplot for One (Dot Plot) or Two Variables
xRow

Add the Word Row to Case Labels that Could be Numeric
corCFA

Confirmatory Factor Analysis of a Multiple Indicator Measurement Model
values

List the Values of a Variable
dataCars93

Data: Cars93
simFlips

Pedagogical Binomial Simulation, Coin flips
Sort

Sort the Rows of a Data Frame
label

Return or Assign a Variable Label
set

Set the Default Color Theme and Other System Settings
corEFA

Exploratory Factor Analysis and Multiple Indicator Measurement Model
xNum

Text Processing: Convert a Number to a Word
dataBodyMeas

Data: Body Measurements
prob.znorm

Plot a Normal Curve with Shaded Intervals by Standard Deviation
simMeans

Pedagogical Simulation of Sample Means over Repeated Samples
to

Create a Sequence of Numbered Variable Names with a Common Prefix
xAnd

Text Processing: Insert and Into a List
Histogram

Histogram with Color
details

Display Contents of a Data File and Optional Variable Labels
corReflect

Reflect Specified Variables in a Correlation Matrix
Regression

Regression Analysis
Merge

Merge Two Data Frames Horizontally or Vertically
dataMach4

Data: Machiavellianism
prob.tcut

Plot t-distribution Curve and Specified Cutoffs with Normal Curve
print.out_piece

Display a Piece of Output from a Saved List Object
regPlot

regPlot Analysis
BarChart

Bar Chart of One or Two Variables