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Overview of the stats[statevalf] Subpackage

Calling Sequence

stats[statevalf][command][distribution](arguments)

command[distribution](arguments)

Description

• 

Important: The stats package has been deprecated. Use the superseding package Statistics instead.

• 

The stats[statevalf] subpackage provides numerical evaluations of statistical functions.

• 

Each command in the stats[statevalf] subpackage can be accessed by using either the long form or the short form of the command name in the command calling sequence.

List of stats[statevalf] Subpackage Commands

• 

The following is a list of available commands for continuous distributions.

cdf

cumulative density function

icdf

inverse cumulative density function

pdf

probability density function

• 

The following is a list of available commands for discrete distributions.

dcdf

discrete cumulative probability function

idcdf

inverse discrete cumulative probability function

pf

probability function

• 

The various distributions take their parameters as indices to the distributions. Refer to stats[distributions] for information on each available distribution.

• 

If a particular call cannot be evaluated, for example trying to find the numerical value of a probability density function at a symbolic value, the call is returned unevaluated. Information is provided in the variable `stats/lasterror` as to the reason why a call was not evaluated. Also, this information is automatically given if infolevel[stats] has a value greater than or equal to one, prior to the unsuccessful call.

• 

To display the help page for a particular stats[statevalf] command, see Getting Help with a Command in a Package.

Examples

Important: The stats package has been deprecated. Use the superseding package Statistics instead.

withstats:

standard normal distribution

statevalfpdf,normald4.0

0.0001338302258

(1)

90% of normal distribution with mean = 1 and standard deviation=2

statevalficdf,normald1,20.9

3.563103131

(2)

cumulative density for a standard normal distribution

statevalfcdf,normald1.0

0.8413447461

(3)

plots of pdf, cdf and icdf of normald

plots[display]plotstatevalfpdf,normald1,2,3..3,colour=green,plotstatevalfcdf,normald1,2,3..3,colour=yellow,plotstatevalficdf,normald1,2,0.1..0.9,colour=red

See Also

plot, plots, Statistics, stats(deprecated)[distributions], stats(deprecated)[statplots]


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