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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_meanplot.wasp
Title produced by softwareMean Plot
Date of computationMon, 03 Nov 2008 12:05:19 -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/03/t1225739152eq1zfzumqrbpqk8.htm/, Retrieved Sun, 19 May 2024 09:37:58 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=21000, Retrieved Sun, 19 May 2024 09:37:58 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact191

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
F     [Mean Plot] [workshop 3] [2007-10-26 12:14:28] [e9ffc5de6f8a7be62f22b142b5b6b1a8]
F    D  [Mean Plot] [Hypotheses Testin...] [2008-11-01 11:04:36] [33f4701c7363e8b81858dafbf0350eed]
F    D    [Mean Plot] [Testing Hypothese...] [2008-11-01 15:12:37] [33f4701c7363e8b81858dafbf0350eed]
F    D        [Mean Plot] [T5] [2008-11-03 19:05:19] [9d7d6e0b01d5647e3f5dd21d8ef8600e] [Current]
-               [Mean Plot] [Task 5] [2008-11-03 20:50:18] [1e82cb4c98d4057b5653dbe7a07f2cda]
F               [Mean Plot] [task 5] [2008-11-03 23:06:08] [b641c14ac36cb6fee377f3b099dcac19]
-               [Mean Plot] [] [2008-11-09 19:54:39] [888addc516c3b812dd7be4bd54caa358]
-               [Mean Plot] [] [2008-11-09 19:54:39] [888addc516c3b812dd7be4bd54caa358]
Feedback Forum
2008-11-10 15:59:32 [Matthieu Blondeau] [reply] 
De studente antwoordt hier niet helemaal correct.
In de Mean Plot zien we inderdaad een vrij constante dalende lijn. Als men gaat zien in de Notched Box Plots Periodic Subseries merken we dat dit verschil ook helemaal niet significant is en dat dit verschil te wijten is aan het toeval. De studente zet de link niet met de notched box plots.

De mediaan in de Notched box plots liggen ongeveer op één lijn.
Als we naar de grenzen van de verschillende boxplots kijken, merken we op dat de betrouwbaarheidsintervallen elkaar telkens overlappen.
In de Sequential blocks kan men zien dat er elk jaar een duidelijke significante daling is tussen de verschillende reeksen. De betrouwbaarheidsintervallen komen niet overeen met elkaar.


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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
121.5
121
120.6
120.2
119.9
119.5
119.1
118.6
118.2
118
118
118
118
117.9
117.6
117.2
116.7
116.2
115.8
115.4
114.9
114.5
114
113.4
112.8
112.4
112.2
112.4
112.7
113
113.1
113
112.9
112.9
112.6
112.1
111.5
111
110.6
110.1
109.4
108.6
107.7
106.9
106.2
105.5
104.8
104.2
103.6
102.9
102.2
101.5
101.2
101.1
101.2
101.4
101.6
101.8
102.2
102.8

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time3 seconds
R Server'Herman Ole Andreas Wold' @ 193.190.124.10:1001

\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' @ 193.190.124.10:1001 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=21000&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' @ 193.190.124.10:1001[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=21000&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=21000&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 time3 seconds
R Server'Herman Ole Andreas Wold' @ 193.190.124.10:1001


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 12 ;
Parameters (R input):
par1 = 12 ;
R code (references can be found in the software module):
par1 <- as.numeric(par1)
(n <- length(x))
(np <- floor(n / par1))
arr <- array(NA,dim=c(par1,np+1))
ari <- array(0,dim=par1)
j <- 0
for (i in 1:n)
{
j = j + 1
ari[j] = ari[j] + 1
arr[j,ari[j]] <- x[i]
if (j == par1) j = 0
}
ari
arr
arr.mean <- array(NA,dim=par1)
arr.median <- array(NA,dim=par1)
arr.midrange <- array(NA,dim=par1)
for (j in 1:par1)
{
arr.mean[j] <- mean(arr[j,],na.rm=TRUE)
arr.median[j] <- median(arr[j,],na.rm=TRUE)
arr.midrange[j] <- (quantile(arr[j,],0.75,na.rm=TRUE) + quantile(arr[j,],0.25,na.rm=TRUE)) / 2
}
overall.mean <- mean(x)
overall.median <- median(x)
overall.midrange <- (quantile(x,0.75) + quantile(x,0.25)) / 2
bitmap(file='plot1.png')
plot(arr.mean,type='b',ylab='mean',main='Mean Plot',xlab='Periodic Index')
mtext(paste('#blocks = ',np))
abline(overall.mean,0)
dev.off()
bitmap(file='plot2.png')
plot(arr.median,type='b',ylab='median',main='Median Plot',xlab='Periodic Index')
mtext(paste('#blocks = ',np))
abline(overall.median,0)
dev.off()
bitmap(file='plot3.png')
plot(arr.midrange,type='b',ylab='midrange',main='Midrange Plot',xlab='Periodic Index')
mtext(paste('#blocks = ',np))
abline(overall.midrange,0)
dev.off()
bitmap(file='plot4.png')
z <- data.frame(t(arr))
names(z) <- c(1:par1)
(boxplot(z,notch=TRUE,col='grey',xlab='Periodic Index',ylab='Value',main='Notched Box Plots - Periodic Subseries'))
dev.off()
bitmap(file='plot5.png')
z <- data.frame(arr)
names(z) <- c(1:np)
(boxplot(z,notch=TRUE,col='grey',xlab='Block Index',ylab='Value',main='Notched Box Plots - Sequential Blocks'))
dev.off()
bitmap(file='plot6.png')
z <- data.frame(cbind(arr.mean,arr.median,arr.midrange))
names(z) <- list('mean','median','midrange')
(boxplot(z,notch=TRUE,col='grey',ylab='Overall Central Tendency',main='Notched Box Plots'))
dev.off()