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Author's title

Author

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R Software Module

rwasp_fitdistrnorm.wasp

Title produced by software

Maximum-likelihood Fitting - Normal Distribution

Date of computation

Tue, 11 Nov 2008 10:44:35 -0700

Cite this page as follows

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2008/Nov/11/t1226425514f05zuwk0olt5aq6.htm/, Retrieved Sun, 19 May 2024 11:29:15 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=23776, Retrieved Sun, 19 May 2024 11:29:15 +0000

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IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

124

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)

F     [Maximum-likelihood Fitting - Normal Distribution] [various eda top�c...] [2008-11-04 20:49:44] [077ffec662d24c06be4c491541a44245]
F   P   [Maximum-likelihood Fitting - Normal Distribution] [Maximum-likelihoo...] [2008-11-11 16:09:48] [73d6180dc45497329efd1b6934a84aba]
F           [Maximum-likelihood Fitting - Normal Distribution] [Maximum-likelihoo...] [2008-11-11 17:44:35] [14a75ec03b2c0d8ddd8b141a7b1594fd] [Current]
F   P         [Maximum-likelihood Fitting - Normal Distribution] [] [2008-11-11 20:10:08] [a7a7b7de998247cdf0f65ef79d563d66] 
-   P         [Maximum-likelihood Fitting - Normal Distribution] [] [2008-11-21 18:07:46] [888addc516c3b812dd7be4bd54caa358] 

Feedback Forum

2008-11-20 23:33:11 [Olivier Uyttendaele] [reply] 
Dit is een conclusie die ik ook zou maken, misschien mag de stelling dat er totaal geen normaalverdeling is, iets genuanceerder kunnen. Het is geen perfecte normaalverdeling maar ook geen atypische verdeling.
2008-11-22 10:57:15 [Kenny Simons] [reply] 
Het histogram heeft hier inderdaad niet hetzelfde verloop als de Gauss-curve, maar het wijkt er nu ook weer niet dramatisch van af. We hebben hier dus niet te maken met een perfecte normaalverdeling, maar we hebben nu ook niet echt te maken met een zeer opvallende afwijking

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Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 seconds
R Server	'Gwilym Jenkins' @ 72.249.127.135

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input & view raw input (R code)  \tabularnewline
Raw Output & view raw output of R engine  \tabularnewline
Computing time & 1 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=23776&T=0

[TABLE]
[ROW][C]Summary of computational transaction[/C][/ROW]
[ROW][C]Raw Input[/C][C]view raw input (R code) [/C][/ROW]
[ROW][C]Raw Output[/C][C]view raw output of R engine [/C][/ROW]
[ROW][C]Computing time[/C][C]1 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Gwilym Jenkins' @ 72.249.127.135[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=23776&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=23776&T=0

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 seconds
R Server	'Gwilym Jenkins' @ 72.249.127.135

Parameter	Estimated Value	Standard Deviation
mean	14294.1416666667	231.382509390015
standard deviation	1792.28121094242	163.612141437640

\begin{tabular}{lllllllll}
\hline
Parameter & Estimated Value & Standard Deviation \tabularnewline
mean & 14294.1416666667 & 231.382509390015 \tabularnewline
standard deviation & 1792.28121094242 & 163.612141437640 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=23776&T=1

[TABLE]
[ROW][C]Parameter[/C][C]Estimated Value[/C][C]Standard Deviation[/C][/ROW]
[ROW][C]mean[/C][C]14294.1416666667[/C][C]231.382509390015[/C][/ROW]
[ROW][C]standard deviation[/C][C]1792.28121094242[/C][C]163.612141437640[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=23776&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=23776&T=1

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Parameter	Estimated Value	Standard Deviation
mean	14294.1416666667	231.382509390015
standard deviation	1792.28121094242	163.612141437640

Figure 1

PNG link

Postscript link

PDF link

Parameters (Session):

par1 = 50 ; par2 = 50 ; par3 = Y ; par4 = Y ; par5 = uitvoer Vlaanderen ; par6 = uitvoer Belgie naar landen buiten EU ; par7 = uitvoer Belgie (totaal) ;

Parameters (R input):

par1 = 8 ; par2 = 0 ;

R code (references can be found in the software module):

library(MASS)
par1 <- as.numeric(par1)
if (par2 == '0') par2 = 'Sturges' else par2 <- as.numeric(par2)
x <- as.ts(x) #otherwise the fitdistr function does not work properly
r <- fitdistr(x,'normal')
r
bitmap(file='test1.png')
myhist<-hist(x,col=par1,breaks=par2,main=main,ylab=ylab,xlab=xlab,freq=F)
curve(1/(r$estimate[2]*sqrt(2*pi))*exp(-1/2*((x-r$estimate[1])/r$estimate[2])^2),min(x),max(x),add=T)
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Parameter',1,TRUE)
a<-table.element(a,'Estimated Value',1,TRUE)
a<-table.element(a,'Standard Deviation',1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'mean',header=TRUE)
a<-table.element(a,r$estimate[1])
a<-table.element(a,r$sd[1])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'standard deviation',header=TRUE)
a<-table.element(a,r$estimate[2])
a<-table.element(a,r$sd[2])
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')

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Input Parameters & R Code