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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_babies.wasp
Title produced by softwareExercise 1.13
Date of computationMon, 13 Oct 2008 09:54:03 -0600
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/Oct/13/t122391330476cz9nv4mdc2yjl.htm/, Retrieved Wed, 11 Feb 2026 22:55:45 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=15685, Retrieved Wed, 11 Feb 2026 22:55:45 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact383

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
F     [Exercise 1.13] [Exercise 1.13 (Wo...] [2008-10-01 13:28:34] [b98453cac15ba1066b407e146608df68]
F         [Exercise 1.13] [ex 1.13 - vraag 1] [2008-10-13 15:54:03] [b79c120a10db68831e56670e957149a7] [Current]
F   P       [Exercise 1.13] [ex 1.13 vraag 2] [2008-10-13 15:56:20] [1e82cb4c98d4057b5653dbe7a07f2cda]
- R           [Exercise 1.13] [ex 1.13 vraag 3] [2008-10-13 16:00:47] [1e82cb4c98d4057b5653dbe7a07f2cda]
F   P           [Exercise 1.13] [ex 1.13 vraag 3 OK] [2008-10-13 18:33:37] [1e82cb4c98d4057b5653dbe7a07f2cda]
F   P       [Exercise 1.13] [] [2008-10-13 16:21:16] [74be16979710d4c4e7c6647856088456]
F   P         [Exercise 1.13] [] [2008-10-13 16:25:20] [74be16979710d4c4e7c6647856088456]
F R             [Exercise 1.13] [] [2008-10-13 16:30:59] [74be16979710d4c4e7c6647856088456]
Feedback Forum
2008-10-17 16:22:06 [Jeroen Michel] [reply] 
De berekening is correct uitgevoerd. Misschien was het verstandig de berekening met betrekking tot deze vraag verschillende keren uit de voeren met de huidige ingevulde parameter (365 dagen) en enkele keren met als ingevulde parameter 3650 dagen. Op deze manier kan je zien dat bij de eerste berekening de bekomen resultaten ver uit mekaar liggen. Bij een tweede berekening (Aantal dagen: 3650) liggen de bekomen resultaten dichter bij mekaar. Er ontstaat een veel accurater resultaat.
2008-10-20 19:54:57 [9ea3dc0efd57f9e81a454bb0e5f6b4e7] [reply] 
de berekening klopt, de studente heeft de parameter 'aantal dagen' verhoogt van 365 (=1jr) naar 3650 (=10jaar). De regel is hoe groter de tijdspanne hoe nauwkeuriger de resultaten en 3650 is het maximum in deze berekening. Handige tip voor de volgende opdrachten, misschien kan je je berekening een aantal keer herhalen zo krijg je te zien hoe groot het verschil is tussen je kleinste en hoogste waarde.
2008-10-20 19:55:26 [Steven Symons] [reply] 
de berekening klopt, de studente heeft de parameter 'aantal dagen' verhoogt van 365 (=1jr) naar 3650 (=10jaar). De regel is hoe groter de tijdspanne hoe nauwkeuriger de resultaten en 3650 is het maximum in deze berekening. Handige tip voor de volgende opdrachten, misschien kan je je berekening een aantal keer herhalen zo krijg je te zien hoe groot het verschil is tussen je kleinste en hoogste waarde.

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Dataset

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time5 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 & 5 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=15685&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]5 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=15685&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=15685&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 time5 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135






Exercise 1.13 p. 14 (Introduction to Probability, 2nd ed.)
Number of simulated days3650
Expected number of births in Large Hospital45
Expected number of births in Small Hospital15
Percentage of Male births per day(for which the probability is computed)0.6
#Females births in Large Hospital82142
#Males births in Large Hospital82108
#Female births in Small Hospital27483
#Male births in Small Hospital27267
Probability of more than 60 % of male births in Large Hospital0.064931506849315
Probability of more than 60 % of male births in Small Hospital0.14
#Days per Year when more than 60 % of male births occur in Large Hospital23.7
#Days per Year when more than 60 % of male births occur in Small Hospital51.1

\begin{tabular}{lllllllll}
\hline
Exercise 1.13 p. 14 (Introduction to Probability, 2nd ed.) \tabularnewline
Number of simulated days & 3650 \tabularnewline
Expected number of births in Large Hospital & 45 \tabularnewline
Expected number of births in Small Hospital & 15 \tabularnewline
Percentage of Male births per day(for which the probability is computed) & 0.6 \tabularnewline
#Females births in Large Hospital & 82142 \tabularnewline
#Males births in Large Hospital & 82108 \tabularnewline
#Female births in Small Hospital & 27483 \tabularnewline
#Male births in Small Hospital & 27267 \tabularnewline
Probability of more than 60 % of male births in Large Hospital & 0.064931506849315 \tabularnewline
Probability of more than 60 % of male births in Small Hospital & 0.14 \tabularnewline
#Days per Year when more than 60 % of male births occur in Large Hospital & 23.7 \tabularnewline
#Days per Year when more than 60 % of male births occur in Small Hospital & 51.1 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=15685&T=1

[TABLE]
[ROW][C]Exercise 1.13 p. 14 (Introduction to Probability, 2nd ed.)[/C][/ROW]
[ROW][C]Number of simulated days[/C][C]3650[/C][/ROW]
[ROW][C]Expected number of births in Large Hospital[/C][C]45[/C][/ROW]
[ROW][C]Expected number of births in Small Hospital[/C][C]15[/C][/ROW]
[ROW][C]Percentage of Male births per day(for which the probability is computed)[/C][C]0.6[/C][/ROW]
[ROW][C]#Females births in Large Hospital[/C][C]82142[/C][/ROW]
[ROW][C]#Males births in Large Hospital[/C][C]82108[/C][/ROW]
[ROW][C]#Female births in Small Hospital[/C][C]27483[/C][/ROW]
[ROW][C]#Male births in Small Hospital[/C][C]27267[/C][/ROW]
[ROW][C]Probability of more than 60 % of male births in Large Hospital[/C][C]0.064931506849315[/C][/ROW]
[C]Probability of more than 60 % of male births in Small Hospital[/C][C]0.14[/C][/ROW]
[ROW][C]#Days per Year when more than 60 % of male births occur in Large Hospital[/C][C]23.7[/C][/ROW]
[C]#Days per Year when more than 60 % of male births occur in Small Hospital[/C][C]51.1[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=15685&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=15685&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:

Exercise 1.13 p. 14 (Introduction to Probability, 2nd ed.)
Number of simulated days3650
Expected number of births in Large Hospital45
Expected number of births in Small Hospital15
Percentage of Male births per day(for which the probability is computed)0.6
#Females births in Large Hospital82142
#Males births in Large Hospital82108
#Female births in Small Hospital27483
#Male births in Small Hospital27267
Probability of more than 60 % of male births in Large Hospital0.064931506849315
Probability of more than 60 % of male births in Small Hospital0.14
#Days per Year when more than 60 % of male births occur in Large Hospital23.7
#Days per Year when more than 60 % of male births occur in Small Hospital51.1


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 3650 ; par2 = 45 ; par3 = 15 ; par4 = 0.6 ;
Parameters (R input):
par1 = 3650 ; par2 = 45 ; par3 = 15 ; par4 = 0.6 ;
R code (references can be found in the software module):
par1 <- as.numeric(par1)
par2 <- as.numeric(par2)
par3 <- as.numeric(par3)
par4 <- as.numeric(par4)
numsuccessbig <- 0
numsuccesssmall <- 0
bighospital <- array(NA,dim=c(par1,par2))
smallhospital <- array(NA,dim=c(par1,par3))
bigprob <- array(NA,dim=par1)
smallprob <- array(NA,dim=par1)
for (i in 1:par1) {
bighospital[i,] <- sample(c('F','M'),par2,replace=TRUE)
if (as.matrix(table(bighospital[i,]))[2] > par4*par2) numsuccessbig = numsuccessbig + 1
bigprob[i] <- numsuccessbig/i
smallhospital[i,] <- sample(c('F','M'),par3,replace=TRUE)
if (as.matrix(table(smallhospital[i,]))[2] > par4*par3) numsuccesssmall = numsuccesssmall + 1
smallprob[i] <- numsuccesssmall/i
}
tbig <- as.matrix(table(bighospital))
tsmall <- as.matrix(table(smallhospital))
tbig
tsmall
numsuccessbig/par1
bigprob[par1]
numsuccesssmall/par1
smallprob[par1]
numsuccessbig/par1*365
bigprob[par1]*365
numsuccesssmall/par1*365
smallprob[par1]*365
bitmap(file='test1.png')
plot(bigprob,col=2,main='Probability in Large Hospital',xlab='#simulated days',ylab='probability')
dev.off()
bitmap(file='test2.png')
plot(smallprob,col=2,main='Probability in Small Hospital',xlab='#simulated days',ylab='probability')
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Exercise 1.13 p. 14 (Introduction to Probability, 2nd ed.)',2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Number of simulated days',header=TRUE)
a<-table.element(a,par1)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Expected number of births in Large Hospital',header=TRUE)
a<-table.element(a,par2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Expected number of births in Small Hospital',header=TRUE)
a<-table.element(a,par3)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Percentage of Male births per day
(for which the probability is computed)',header=TRUE)
a<-table.element(a,par4)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'#Females births in Large Hospital',header=TRUE)
a<-table.element(a,tbig[1])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'#Males births in Large Hospital',header=TRUE)
a<-table.element(a,tbig[2])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'#Female births in Small Hospital',header=TRUE)
a<-table.element(a,tsmall[1])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'#Male births in Small Hospital',header=TRUE)
a<-table.element(a,tsmall[2])
a<-table.row.end(a)
a<-table.row.start(a)
dum1 <- paste('Probability of more than', par4*100, sep=' ')
dum <- paste(dum1, '% of male births in Large Hospital', sep=' ')
a<-table.element(a, dum, header=TRUE)
a<-table.element(a, bigprob[par1])
a<-table.row.end(a)
dum <- paste(dum1, '% of male births in Small Hospital', sep=' ')
a<-table.element(a, dum, header=TRUE)
a<-table.element(a, smallprob[par1])
a<-table.row.end(a)
a<-table.row.start(a)
dum1 <- paste('#Days per Year when more than', par4*100, sep=' ')
dum <- paste(dum1, '% of male births occur in Large Hospital', sep=' ')
a<-table.element(a, dum, header=TRUE)
a<-table.element(a, bigprob[par1]*365)
a<-table.row.end(a)
dum <- paste(dum1, '% of male births occur in Small Hospital', sep=' ')
a<-table.element(a, dum, header=TRUE)
a<-table.element(a, smallprob[par1]*365)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')