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Description of Statistical Computation

Author's title

Author*Unverified author*
R Software Modulerwasp_fitdistrnorm.wasp
Title produced by softwareMaximum-likelihood Fitting - Normal Distribution
Date of computationThu, 13 Nov 2008 03:32:40 -0700
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2008/Nov/13/t1226572481xxh5pc8u0jggmdi.htm/, Retrieved Mon, 20 May 2024 08:41:13 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=24555, Retrieved Mon, 20 May 2024 08:41:13 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact149

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
F       [Maximum-likelihood Fitting - Normal Distribution] [NormDistr] [2008-11-13 10:32:40] [80e37024345c6a903bf645806b7fbe14] [Current]
Feedback Forum
2008-11-15 12:46:43 [Ken Wright] [reply] 
Correct dat het histogram min of meer een normale verdeling volgt, natuurlijk niet helemaal maar er is een top in het midden en niet echt rechts of linksscheef. Dus het is een tamelijk goede maatstaf.
2008-11-19 15:37:43 [Glenn Maras] [reply] 
De student heeft hier wel een juiste conclusie getrokken.
Hij/zij zegt dat de gegevens zeer sterk op een normaalverdeling gelijken, en dat er geen links- of rechtsscheefheid aanwezig is.

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
1530,9
2220,6
2161,5
1863,6
1955,1
1907,4
1889,4
2246,3
2213
1965
2285,6
1983,8
1872,4
2371,4
2287
2198,2
2330,4
2014,4
2066,1
2355,8
2232,5
2091,7
2376,5
1931,9
2025,7
2404,9
2316,1
2368,1
2282,5
2158,6
2174,8
2594,1
2281,4
2547,9
2606,3
2190,8
2262,3
2423,8
2520,4
2482,9
2215,9
2441,9
2333,8
2670,2
2431
2559,3
2661,4
2404,6
2378,3
2489,2
2959
2713,5
2341,3
2833,2
2849,7
2871,7
3058,3
2855,1
3083,6
2828,3

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'George Udny Yule' @ 72.249.76.132

\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 & 'George Udny Yule' @ 72.249.76.132 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=24555&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]'George Udny Yule' @ 72.249.76.132[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=24555&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=24555&T=0

As an alternative you can also use a QR Code:  
QR Code


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

Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'George Udny Yule' @ 72.249.76.132






ParameterEstimated ValueStandard Deviation
mean2349.5066666666741.0379162663199
standard deviation317.87833252502329.0181888776805

\begin{tabular}{lllllllll}
\hline
Parameter & Estimated Value & Standard Deviation \tabularnewline
mean & 2349.50666666667 & 41.0379162663199 \tabularnewline
standard deviation & 317.878332525023 & 29.0181888776805 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=24555&T=1

[TABLE]
[ROW][C]Parameter[/C][C]Estimated Value[/C][C]Standard Deviation[/C][/ROW]
[ROW][C]mean[/C][C]2349.50666666667[/C][C]41.0379162663199[/C][/ROW]
[ROW][C]standard deviation[/C][C]317.878332525023[/C][C]29.0181888776805[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=24555&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=24555&T=1

As an alternative you can also use a QR Code:  
QR Code


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

ParameterEstimated ValueStandard Deviation
mean2349.5066666666741.0379162663199
standard deviation317.87833252502329.0181888776805


Figures (Output of Computation)

Input Parameters & R Code

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')