normal: A Normal Distribution

In lestat: A Package for Learning Statistics

Description

Create an object representing a univariate normal distribution.

Usage

normal(expectation = 0, lambda, P = 1)

Arguments

expectation	The expectation of the distribution.
lambda	THE NATURAL LOGARITHM OF THE STANDARD DEVIATION OF THE DISTRIBUTION. Thus, if the desired standard deviation is s, the second argument should be \log(s). If the desired variance is v, the second argument should be \log(v)/2. The default is a standard deviation of 1. An alternative to specifying this argument is to specify the precision parameter P.
P	If given, this argument specifies the precision of the distribution, i.e., the inverse of the variance.

Value

A univariate normal probability distribution.

Author(s)

Petter Mostad <[e-mail]>

See Also

mnormal

Examples

dist <- normal(3, log(0.7))
variance(dist)
dist <- normal(5, log(0.49)/2)
variance(dist)
dist <- normal(7, P = 2)
variance(dist)

Example output

Loading required package: MASS
[1] 0.49
[1] 0.49
[1] 0.5

lestat documentation built on May 2, 2019, 2:09 p.m.