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Author's title

Author

*Unverified author*

R Software Module

rwasp_fitdistrnorm.wasp

Title produced by software

Maximum-likelihood Fitting - Normal Distribution

Date of computation

Tue, 15 Jan 2008 14:45:46 -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/Jan/15/t1200433316l3xwd6vlcudhue0.htm/, Retrieved Wed, 15 May 2024 06:48:29 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=7970, Retrieved Wed, 15 May 2024 06:48:29 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

304

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

-       [Maximum-likelihood Fitting - Normal Distribution] [maximum likelihoo...] [2008-01-15 21:45:46] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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Dataseries X:

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Histogram

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67.79
-26.91
30.99
-18.77
-26.06
39.62
36.86
-9.1
-11.24
-21.38
44.59
-11.39
21.85
-26.16
-4.99
-4.91
-1.79
-26.83
33.37
-7.89
-15.86
-7.42
-8.49
-7.75
-16.48
-6.26
-10.3
-20.38
-17.24
7.36
-14.48
-10.77
24.81
6.58
-13.52
-4.11
22.47
-3.27
-6.94
-10.17
-27.59
31.9
-12.17
-4.74
-21.27
-24.86
-12.32
9.1
-21.64
5.92
-11.46
-5.34
21.99
-11.65
-20.51
-2.17
3.76
36.9
-14.69
-17.61
17.9
-18.37
2.16
-3.95
10.15
42.98
-19.15
-20.55
-1.35
-26.35
27.92
2.7
-9.1
4.35
-23.74
-15.46
-9.79
5.27
20.22
41.01
11.28
28.8
39.47
-35.44
-11.13
7.11
22.63
8.48
-8.98
18.36
-2.96
18.63
23.67
-10.28
-20.36
36.48
-10.37
-28.24
2.67
29.94
-17.95
-23.51
56.06
21.3
-13.57
18.83
-6.87
-31.51
29.43
-22.31
12.73
-7.81
11.48
-7.23
-19.33
-5
-8.33

Summary of compuational 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 compuational 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=7970&T=0

[TABLE]
[ROW][C]Summary of compuational 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=7970&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=7970&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 compuational 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	-1.58200850330534e-17	1.95466829955811
standard deviation	21.1429703417423	1.38215920958792

\begin{tabular}{lllllllll}
\hline
Parameter & Estimated Value & Standard Deviation \tabularnewline
mean & -1.58200850330534e-17 & 1.95466829955811 \tabularnewline
standard deviation & 21.1429703417423 & 1.38215920958792 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=7970&T=1

[TABLE]
[ROW][C]Parameter[/C][C]Estimated Value[/C][C]Standard Deviation[/C][/ROW]
[ROW][C]mean[/C][C]-1.58200850330534e-17[/C][C]1.95466829955811[/C][/ROW]
[ROW][C]standard deviation[/C][C]21.1429703417423[/C][C]1.38215920958792[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=7970&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=7970&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	-1.58200850330534e-17	1.95466829955811
standard deviation	21.1429703417423	1.38215920958792

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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Figures (Output of Computation)

Input Parameters & R Code