R help - Sep 2009 - Normal distribution

 Dear All 
 
let me go one step further by asking you if you could help me show that the
distribution of this data in normal.  have a little idea (by trial and
error) but i seem to not fully understand how its done.
 
H<-rnorm(100, mean=50000, sd=3000)
par(las=1)
hist(H, breaks=seq(40000, 60000, 1000), freq=F)
f<- function(x) exp(-(x-5000)^2/18000000)/sqrt(18000000*pi) 
x<- seq(40000, 60000, 1000)
lines(x,f(x))
 
The code works when  its like this:
 
H<-rnorm(100, mean=5000, sd=1000)
par(las=1)
hist(H, breaks=seq(2000, 8000, 100), freq=F)
f<- function(x) exp(-(x-5000)^2/2000000)/sqrt(2000000*pi) 
x<- seq(2000, 8000, 50)
lines(x,f(x))
 
Please tell me or advice of an easier or understandable code

 

 


      
	[[alternative HTML version deleted]]

Why don't you just do this:

H<-rnorm(100, mean=50000, sd=3000)
par(las=1)
hist(H, breaks=seq(40000, 60000, 1000), freq=F)
f<- function(x) exp(-(x-5000)^2/18000000)/sqrt(18000000*pi)
x<- seq(40000, 60000, 100)
lines(x, dnorm(x, 50000, 3000))



On Sat, Sep 12, 2009 at 5:47 PM, KABELI MEFANE<kabelimefane at
yahoo.co.uk> wrote:
> ?Dear All
>
> let me go one step further by asking you if you could help me show that the
distribution of this data in normal.? have a little idea (by trial and
error)?but i seem to not fully understand how its done.
>
> H<-rnorm(100, mean=50000, sd=3000)
> par(las=1)
> hist(H, breaks=seq(40000, 60000, 1000), freq=F)
> f<- function(x) exp(-(x-5000)^2/18000000)/sqrt(18000000*pi)
> x<- seq(40000, 60000, 1000)
> lines(x,f(x))
>
> The code works when? its like this:
>
> H<-rnorm(100, mean=5000, sd=1000)
> par(las=1)
> hist(H, breaks=seq(2000, 8000, 100), freq=F)
> f<- function(x) exp(-(x-5000)^2/2000000)/sqrt(2000000*pi)
> x<- seq(2000, 8000, 50)
> lines(x,f(x))
>
> Please tell me or advice of an easier or understandable code
>
>
>
>
>
>
>
> ? ? ? ?[[alternative HTML version deleted]]
>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

Hi,

I am dealing with how to check in R if some data that I have belongs to a
normal distribution or not. I am not interested in obtaining the
theoreticall frequencies. I am only interested in determing if (by means of
a test as Kolmogorov, or whatever), if my data are normal or not.

But I have tried with ks.test() and I have not got it.


-- 
Noela
Grupo de Recursos Marinos y Pesquerías
Universidad de A Coruña

	[[alternative HTML version deleted]]

?shapiro.test


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Noela S?nchez
Sent: Thursday, October 01, 2009 12:47 PM
To: r-help at r-project.org
Subject: [R] Normal distribution

Hi,

I am dealing with how to check in R if some data that I have belongs to a normal
distribution or not. I am not interested in obtaining the theoreticall
frequencies. I am only interested in determing if (by means of a test as
Kolmogorov, or whatever), if my data are normal or not.

But I have tried with ks.test() and I have not got it.


--
Noela
Grupo de Recursos Marinos y Pesquer?as
Universidad de A Coru?a

	[[alternative HTML version deleted]]

This email message, including any attachments, is for th...{{dropped:6}}

See fortune(234)

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Noela S?nchez
> Sent: Thursday, October 01, 2009 10:47 AM
> To: r-help at r-project.org
> Subject: [R] Normal distribution
> 
> Hi,
> 
> I am dealing with how to check in R if some data that I have belongs to
> a
> normal distribution or not. I am not interested in obtaining the
> theoreticall frequencies. I am only interested in determing if (by
> means of
> a test as Kolmogorov, or whatever), if my data are normal or not.
> 
> But I have tried with ks.test() and I have not got it.
> 
> 
> --
> Noela
> Grupo de Recursos Marinos y Pesquer?as
> Universidad de A Coru?a
> 
> 	[[alternative HTML version deleted]]