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Author's title

Author

*Unverified author*

R Software Module

rwasp_rngnorm.wasp

Title produced by software

Random Number Generator - Normal Distribution

Date of computation

Wed, 03 Aug 2016 21:17:51 +0100

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/2016/Aug/03/t14702555822e7wnkb7tdqljfh.htm/, Retrieved Mon, 06 May 2024 05:59:54 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=296013, Retrieved Mon, 06 May 2024 05:59:54 +0000

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No (this computation is public)

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Estimated Impact

163

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

-       [Random Number Generator - Normal Distribution] [] [2016-08-03 20:17:51] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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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	3 seconds
R Server	'Herman Ole Andreas Wold' @ wold.wessa.net

\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 & 3 seconds \tabularnewline
R Server & 'Herman Ole Andreas Wold' @ wold.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=296013&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]3 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Herman Ole Andreas Wold' @ wold.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=296013&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=296013&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	3 seconds
R Server	'Herman Ole Andreas Wold' @ wold.wessa.net

Parameter	Value	Standard Deviation
# simulated values	100	-
true mean	0	-
true standard deviation	1	-
mean	-0.0510124598451868	0.107405072520669
standard deviation	1.07405072520669	0.0759468551131983

\begin{tabular}{lllllllll}
\hline
Parameter & Value & Standard Deviation \tabularnewline
# simulated values & 100 & - \tabularnewline
true mean & 0 & - \tabularnewline
true standard deviation & 1 & - \tabularnewline
mean & -0.0510124598451868 & 0.107405072520669 \tabularnewline
standard deviation & 1.07405072520669 & 0.0759468551131983 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=296013&T=1

[TABLE]
[ROW][C]Parameter[/C][C]Value[/C][C]Standard Deviation[/C][/ROW]
[ROW][C]# simulated values[/C][C]100[/C][C]-[/C][/ROW]
[ROW][C]true mean[/C][C]0[/C][C]-[/C][/ROW]
[ROW][C]true standard deviation[/C][C]1[/C][C]-[/C][/ROW]
[ROW][C]mean[/C][C]-0.0510124598451868[/C][C]0.107405072520669[/C][/ROW]
[ROW][C]standard deviation[/C][C]1.07405072520669[/C][C]0.0759468551131983[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=296013&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=296013&T=1

As an alternative you can also use a QR Code:

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

Parameter	Value	Standard Deviation
# simulated values	100	-
true mean	0	-
true standard deviation	1	-
mean	-0.0510124598451868	0.107405072520669
standard deviation	1.07405072520669	0.0759468551131983

Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[-3,-2.5[	-2.75	1	0.01	0.01	0.02
[-2.5,-2[	-2.25	2	0.02	0.03	0.04
[-2,-1.5[	-1.75	9	0.09	0.12	0.18
[-1.5,-1[	-1.25	6	0.06	0.18	0.12
[-1,-0.5[	-0.75	14	0.14	0.32	0.28
[-0.5,0[	-0.25	21	0.21	0.53	0.42
[0,0.5[	0.25	18	0.18	0.71	0.36
[0.5,1[	0.75	13	0.13	0.84	0.26
[1,1.5[	1.25	8	0.08	0.92	0.16
[1.5,2[	1.75	5	0.05	0.97	0.1
[2,2.5]	2.25	3	0.03	1	0.06

\begin{tabular}{lllllllll}
\hline
Frequency Table (Histogram) \tabularnewline
Bins & Midpoint & Abs. Frequency & Rel. Frequency & Cumul. Rel. Freq. & Density \tabularnewline
[-3,-2.5[ & -2.75 & 1 & 0.01 & 0.01 & 0.02 \tabularnewline
[-2.5,-2[ & -2.25 & 2 & 0.02 & 0.03 & 0.04 \tabularnewline
[-2,-1.5[ & -1.75 & 9 & 0.09 & 0.12 & 0.18 \tabularnewline
[-1.5,-1[ & -1.25 & 6 & 0.06 & 0.18 & 0.12 \tabularnewline
[-1,-0.5[ & -0.75 & 14 & 0.14 & 0.32 & 0.28 \tabularnewline
[-0.5,0[ & -0.25 & 21 & 0.21 & 0.53 & 0.42 \tabularnewline
[0,0.5[ & 0.25 & 18 & 0.18 & 0.71 & 0.36 \tabularnewline
[0.5,1[ & 0.75 & 13 & 0.13 & 0.84 & 0.26 \tabularnewline
[1,1.5[ & 1.25 & 8 & 0.08 & 0.92 & 0.16 \tabularnewline
[1.5,2[ & 1.75 & 5 & 0.05 & 0.97 & 0.1 \tabularnewline
[2,2.5] & 2.25 & 3 & 0.03 & 1 & 0.06 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=296013&T=2

[TABLE]
[ROW][C]Frequency Table (Histogram)[/C][/ROW]
[ROW][C]Bins[/C][C]Midpoint[/C][C]Abs. Frequency[/C][C]Rel. Frequency[/C][C]Cumul. Rel. Freq.[/C][C]Density[/C][/ROW]
[ROW][C][-3,-2.5[[/C][C]-2.75[/C][C]1[/C][C]0.01[/C][C]0.01[/C][C]0.02[/C][/ROW]
[ROW][C][-2.5,-2[[/C][C]-2.25[/C][C]2[/C][C]0.02[/C][C]0.03[/C][C]0.04[/C][/ROW]
[ROW][C][-2,-1.5[[/C][C]-1.75[/C][C]9[/C][C]0.09[/C][C]0.12[/C][C]0.18[/C][/ROW]
[ROW][C][-1.5,-1[[/C][C]-1.25[/C][C]6[/C][C]0.06[/C][C]0.18[/C][C]0.12[/C][/ROW]
[ROW][C][-1,-0.5[[/C][C]-0.75[/C][C]14[/C][C]0.14[/C][C]0.32[/C][C]0.28[/C][/ROW]
[ROW][C][-0.5,0[[/C][C]-0.25[/C][C]21[/C][C]0.21[/C][C]0.53[/C][C]0.42[/C][/ROW]
[ROW][C][0,0.5[[/C][C]0.25[/C][C]18[/C][C]0.18[/C][C]0.71[/C][C]0.36[/C][/ROW]
[ROW][C][0.5,1[[/C][C]0.75[/C][C]13[/C][C]0.13[/C][C]0.84[/C][C]0.26[/C][/ROW]
[ROW][C][1,1.5[[/C][C]1.25[/C][C]8[/C][C]0.08[/C][C]0.92[/C][C]0.16[/C][/ROW]
[ROW][C][1.5,2[[/C][C]1.75[/C][C]5[/C][C]0.05[/C][C]0.97[/C][C]0.1[/C][/ROW]
[ROW][C][2,2.5][/C][C]2.25[/C][C]3[/C][C]0.03[/C][C]1[/C][C]0.06[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=296013&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=296013&T=2

As an alternative you can also use a QR Code:

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

Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[-3,-2.5[	-2.75	1	0.01	0.01	0.02
[-2.5,-2[	-2.25	2	0.02	0.03	0.04
[-2,-1.5[	-1.75	9	0.09	0.12	0.18
[-1.5,-1[	-1.25	6	0.06	0.18	0.12
[-1,-0.5[	-0.75	14	0.14	0.32	0.28
[-0.5,0[	-0.25	21	0.21	0.53	0.42
[0,0.5[	0.25	18	0.18	0.71	0.36
[0.5,1[	0.75	13	0.13	0.84	0.26
[1,1.5[	1.25	8	0.08	0.92	0.16
[1.5,2[	1.75	5	0.05	0.97	0.1
[2,2.5]	2.25	3	0.03	1	0.06

Figure 1

PNG link

Postscript link

PDF link

Parameters (Session):

par1 = 100 ; par2 = 0 ; par3 = 1 ; par4 = 2 ; par5 = N ; par6 = 0 ;

Parameters (R input):

par1 = 100 ; par2 = 0 ; par3 = 1 ; par4 = 2 ; par5 = N ; par6 = 0 ; par7 = ; par8 = ;

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

library(MASS)
library(msm)
par1 <- as.numeric(par1)
if (par1 > 10000) par1=10000 #impose restriction on number of random values
par2 <- as.numeric(par2)
par3 <- as.numeric(par3)
par4 <- as.numeric(par4)
if (par6 == '0') par6 = 'Sturges' else {
par6 <- as.numeric(par6)
if (par6 > 50) par6 = 50 #impose restriction on the number of bins
}
if (par7 == '') par7 <- -Inf else par7 <- as.numeric(par7)
if (par8 == '') par8 <- Inf else par8 <- as.numeric(par8)
x <- rtnorm(par1,par2,par3,par7,par8)
x <- as.ts(x) #otherwise the fitdistr function does not work properly
if ((par7 == -Inf) & (par8 == Inf)) (r <- fitdistr(x,'normal'))
bitmap(file='test1.png')
myhist<-hist(x,col=par4,breaks=par6,main=main,ylab=ylab,xlab=xlab,freq=F)
if ((par7 == -Inf) & (par8 == Inf)) {
curve(1/(r$estimate[2]*sqrt(2*pi))*exp(-1/2*((x-r$estimate[1])/r$estimate[2])^2),min(x),max(x),add=T)
}
dev.off()
load(file='createtable')
if (par5 == 'Y')
{
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Index',1,TRUE)
a<-table.element(a,'Value',1,TRUE)
a<-table.row.end(a)
for (i in 1:par1)
{
a<-table.row.start(a)
a<-table.element(a,i,header=TRUE)
a<-table.element(a,x[i])
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable1.tab')
}
if ((par7 == -Inf) & (par8 == Inf)) {
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Parameter',1,TRUE)
a<-table.element(a,'Value',1,TRUE)
a<-table.element(a,'Standard Deviation',1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'# simulated values',header=TRUE)
a<-table.element(a,par1)
a<-table.element(a,'-')
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'true mean',header=TRUE)
a<-table.element(a,par2)
a<-table.element(a,'-')
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'true standard deviation',header=TRUE)
a<-table.element(a,par3)
a<-table.element(a,'-')
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'mean',header=TRUE)
a<-table.element(a,r$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$sd[2])
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')
}
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,hyperlink('histogram.htm','Frequency Table (Histogram)',''),6,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Bins',header=TRUE)
a<-table.element(a,'Midpoint',header=TRUE)
a<-table.element(a,'Abs. Frequency',header=TRUE)
a<-table.element(a,'Rel. Frequency',header=TRUE)
a<-table.element(a,'Cumul. Rel. Freq.',header=TRUE)
a<-table.element(a,'Density',header=TRUE)
a<-table.row.end(a)
crf <- 0
mynumrows <- (length(myhist$breaks)-1)
for (i in 1:mynumrows) {
a<-table.row.start(a)
dum <- paste('[',myhist$breaks[i],sep='')
dum <- paste(dum,myhist$breaks[i+1],sep=',')
if (i==mynumrows)
dum <- paste(dum,']',sep='')
else
dum <- paste(dum,'[',sep='')
a<-table.element(a,dum,header=TRUE)
a<-table.element(a,myhist$mids[i])
a<-table.element(a,myhist$counts[i])
rf <- myhist$counts[i]/par1
crf <- crf + rf
a<-table.element(a,round(rf,6))
a<-table.element(a,round(crf,6))
a<-table.element(a,round(myhist$density[i],6))
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable3.tab')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code