normals {mixdist}

Scale Mixture Data with Three Normal Components

Description

Scale mixture of three normal distributions.

The normals data frame has 25 rows and 2 columns.

Usage

data(normals)

Format

This data frame contains the following columns:

x

the boundaries of grouping intervals.

freq

the frequencies of observation falling into each interval.

Details

A total of 249 observations were generated by computer to follow the mixture distribution 1/3 N(12.5, 1) + 1/3 N(12.5, 3) + 1/3 N(12.5, 5) where N(m, s) denotes a normal distribution with mean m and standard deviation s.

Source

http://www.math.mcmaster.ca/peter/mix/demex/exscle.html

Examples

data(normals)
plot.mixdata(normals)