lessR (version 2.4.2)

Help: Help System for Statistics by Topic that Suggests Related Functions

Description

Abbreviation: hlp

R works by entering function names and arguments. R provides extensive help for each available function based on a function's name, but these names are not apparent to someone who has not memorized them or has access to their definitions. To alleviate this problem, this help system suggests and briefly explains various function calls regarding a requested topic for statistical analysis.

Usage

Help(topic=NULL)
hlp(...)

Arguments

topic

Message reference, either null to specify a list of available topics or a specific argument to reference a specific help message.

...

Other parameter values to be passed to Help.

Details

Help() displays a list of help topics, listed below.

Help("topic") generally displays the available functions relevant for the specified topic. If the name of the topic is a lessR statistical function, the abbreviated form of the name can also be invoked.

Help("lessR") calls up the link to the lessR manual and news, which includes current updates.

---

data: Create a csv data file from a worksheet application.

Read: Read an external data file in csv format.

Write: Write the contents of mydata to a data file in csv format.

library: Many libraries of functions developed by others can be added to R.

transform: Edit and create new variables from existing variables.

system: System level settings, such as a color theme for graphics.

---

Histogram: Histogram, box plot, dot plot and density curve..

BarChart: Bar chart or pie chart of a categorical variable.

Plot: Scatterplot for one or two variables, line chart.

RunChart: Run chart or time series chart.

---

SummaryStats: Summary statistics for one and two variables.

one.sample: Analysis of a single sample of data.

ttest: The mean difference and related statistics.

ANOVA: Compare means across two or more groups.

power: Power analysis for the t-test.

Correlation: Correlation analysis.

Regression: Regression analysis.

factor.analysis: Confirmatory or exploratory factor analysis.

---

prob: Probabilities for Normal and t-distributions.

random: Random number generation.

sample: Generate random samples.

See Also

help.

Examples

# list the information needed to access a specific topic
Help()
# short name
hlp()

# specific help message regarding summary statistics
Help("SummaryStats")

# abbreviated form of function name
Help("ss")