tSampler function

Illustrating the t-statistic

An app to explore the distribution of the t-statistic. The user takes one sample at a time from a given population. Graphical output updates the empirical distribution of the sample mean.

tSampler(form,data,max.sample.size=30,show.sample=FALSE)

Arguments

• form: An object of class formula, of the form ~x, where x is a numeric variable from the data frame supplied by:
• data: A dataframe, representing the imaginary population.
• max.sample.size: Maximum sample size on the slider.
• show.sample: If TRUE, the complete sample will be output to the console, in addition to the summary information.

Returns

Graphical and numerical output.

Note

Uses manipulate.

Examples

## Not run:

data(imagpop)
if (require(manipulate)) tSampler(~income,data=imagpop)
## End(Not run)

Author(s)

Homer White hwhite0@georgetowncollege.edu