normal.freq {agricolae}R Documentation

Normal curve on the histogram

Description

A normal distribution graph elaborated from the histogram previously constructed. The average and variance are obtained from the data grouped in the histogram.

Usage

normal.freq(histogram, frequency=1, ...)

Arguments

histogram object constructed by the function hist
frequency 1=counts, 2=relative, 3=density
... Other parameters of the function hist

Value

Histogram object
frequency numeric
probability logic False or True

Author(s)

Felipe de Mendiburu

See Also

polygon.freq, table.freq, stat.freq, intervals.freq, sturges.freq, join.freq, ojiva.freq, graph.freq

Examples

library(agricolae)
data(growth)
attach(growth)
#startgraph
h1<-hist(height,col="green",xlim=c(6,14))
normal.freq(h1,col="blue")
#endgraph
#startgraph
h2<-graph.freq(height,col="yellow",xlim=c(6,14),frequency=2)
normal.freq(h2,frequency=2)
#endgraph

[Package agricolae version 1.0-6 Index]