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Author's title

Author

*The author of this computation has been verified*

R Software Module

rwasp_fitdistrnorm.wasp

Title produced by software

Maximum-likelihood Fitting - Normal Distribution

Date of computation

Tue, 19 Oct 2010 16:16:41 +0000

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/2010/Oct/19/t128750495133l6zcu04b15hm3.htm/, Retrieved Sun, 28 Apr 2024 19:51:17 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=86709, Retrieved Sun, 28 Apr 2024 19:51:17 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

101

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

-     [Maximum-likelihood Fitting - Normal Distribution] [Intrinsic Motivat...] [2010-10-12 11:57:21] [b98453cac15ba1066b407e146608df68]
F   PD  [Maximum-likelihood Fitting - Normal Distribution] [] [2010-10-19 16:10:42] [7f2363d2c77d3bf71367965cc53be730]
F    D      [Maximum-likelihood Fitting - Normal Distribution] [] [2010-10-19 16:16:41] [4dba6678eac10ee5c3460d144a14bd5c] [Current]
-    D        [Maximum-likelihood Fitting - Normal Distribution] [] [2010-10-19 16:21:07] [7f2363d2c77d3bf71367965cc53be730] 

Feedback Forum

2010-10-24 13:45:15 [201022de16daa1dc0c172603d7d3cd57] [reply] 
Hier bekomen we een waarde van 0,80 wat eveneens een goed resultaat is. In dit geval zouden we vraag 14 kunnen uitsluiten om nog een correcter resultaat na te streven.
2010-10-24 13:47:49 [201022de16daa1dc0c172603d7d3cd57] [reply] 
Vorige feedback is niet van toepassing op deze computatie. Het is hier de bedoeling om via de Cronbach alfa te kijken of de vragen samen horen of niet. De student heeft hier al een deel van taak 3 opgelost.

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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	0 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 & 0 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=86709&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]0 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=86709&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=86709&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	0 seconds
R Server	'Gwilym Jenkins' @ 72.249.127.135

Parameter	Estimated Value	Standard Deviation
mean	20.5617283950617	0.327677364594882
standard deviation	4.1706519578348	0.231702886546378

\begin{tabular}{lllllllll}
\hline
Parameter & Estimated Value & Standard Deviation \tabularnewline
mean & 20.5617283950617 & 0.327677364594882 \tabularnewline
standard deviation & 4.1706519578348 & 0.231702886546378 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=86709&T=1

[TABLE]
[ROW][C]Parameter[/C][C]Estimated Value[/C][C]Standard Deviation[/C][/ROW]
[ROW][C]mean[/C][C]20.5617283950617[/C][C]0.327677364594882[/C][/ROW]
[ROW][C]standard deviation[/C][C]4.1706519578348[/C][C]0.231702886546378[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=86709&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=86709&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	20.5617283950617	0.327677364594882
standard deviation	4.1706519578348	0.231702886546378

Figure 1

PNG link

Postscript link

PDF link

Parameters (Session):

par1 = 8 ; par2 = 0 ;

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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Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code