normal.freq: Normal curve on the histogram In agricolae: Statistical Procedures for Agricultural Research

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

 `1` ```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`, `ogive.freq`, `graph.freq `

Examples

 ``` 1 2 3 4 5 6 7 8 9 10``` ```library(agricolae) data(growth) #startgraph h1<-with(growth,hist(height,col="green",xlim=c(6,14))) normal.freq(h1,col="blue") #endgraph #startgraph h2<-with(growth,graph.freq(height,col="yellow",xlim=c(6,14),frequency=2)) normal.freq(h2,frequency=2) #endgraph ```

agricolae documentation built on Aug. 5, 2017, 5:02 p.m.