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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_cronbach.wasp
Title produced by softwareCronbach Alpha
Date of computationSun, 28 Nov 2010 12:46:40 +0000
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2010/Nov/28/t1290948298deh1r3vixz9u25x.htm/, Retrieved Fri, 03 May 2024 01:00:28 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=102527, Retrieved Fri, 03 May 2024 01:00:28 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact152

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [Paper: FindingFri...] [2010-11-28 12:46:40] [350231caf55a86a218fd48dc4d2e2f8b] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
4	4	5
4	4	4
3	3	4
4	2	3
3	3	4
4	4	4
4	5	4
4	4	4
4	4	4
2	2	2
2	2	1
4	4	4
4	4	3
4	5	5
4	5	5
3	4	5
4	3	5
4	4	3
3	4	4
2	2	3
2	4	3
4	4	3
3	4	4
4	4	4
4	4	4
3	4	4
3	4	4
2	3	3
3	3	3
4	4	4
3	3	4
3	4	3
4	4	4
NA	4	4
4	4	4
3	4	4
4	4	4
2	3	2
3	4	4
4	4	3
4	4	4
3	3	3
5	5	5
3	4	4
3	4	4
4	4	3
4	4	3
5	5	5
3	4	4
4	4	4
4	4	4
2	3	4
4	4	4
4	4	4
4	5	4
3	4	4
3	3	3
3	3	3
2	4	5
4	4	3
4	4	4
4	4	4
3	3	3
4	3	4
3	3	3
4	4	4
4	4	4
4	4	4
4	4	4
4	5	5
4	3	4
4	4	4
4	3	4
2	2	2
3	4	3
4	4	4
4	5	4
3	2	3
4	4	4
4	4	4
4	4	4
3	NA	3
3	4	4
3	3	4
3	4	5
4	5	4
4	2	5
2	2	3
4	4	3
3	4	4
4	3	4
3	4	4
4	4	4
3	4	3
3	4	4
4	4	4
3	2	2
4	4	5
2	4	2
4	4	4
4	4	3
4	4	4
4	5	5
4	4	2
3	4	3
4	4	5
3	3	4
4	4	3
3	4	3
NA	4	3
3	4	3
2	3	3
4	4	4
4	4	4
4	4	4
1	5	5
4	4	4
4	4	4
4	4	4
3	4	4
4	4	4
4	4	3
3	4	4
4	4	5
4	4	4
4	4	4
4	4	4
4	4	4
3	3	2
3	1	4
4	4	4
4	4	3
4	4	4
4	4	5
4	4	4
4	4	4
4	4	3
4	4	4
4	4	4
3	3	4
3	4	4
4	4	4
4	4	4
2	4	4
4	4	4
4	4	5
4	4	4
5	5	5
4	4	3
4	4	4
4	4	3
4	4	4
4	3	4
4	3	3
4	4	3
4	3	4

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time0 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 & 0 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=102527&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]0 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=102527&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=102527&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 time0 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.69010.6910.60070.4271
Q3 excluded0.62540.62630.45590.4559
Q9 excluded0.55120.55180.3810.381
Q14 excluded0.61520.61530.44430.4443

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6901 & 0.691 & 0.6007 & 0.4271 \tabularnewline
Q3 excluded & 0.6254 & 0.6263 & 0.4559 & 0.4559 \tabularnewline
Q9 excluded & 0.5512 & 0.5518 & 0.381 & 0.381 \tabularnewline
Q14 excluded & 0.6152 & 0.6153 & 0.4443 & 0.4443 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=102527&T=1

[TABLE]
[ROW][C]Cronbach Alpha and Related Statistics[/C][/ROW]
[ROW][C]Items[/C][C]Cronbach Alpha[/C][C]Std. Alpha[/C][C]G6(smc)[/C][C]Average R[/C][/ROW]
[ROW][C]All itmes[/C][C]0.6901[/C][C]0.691[/C][C]0.6007[/C][C]0.4271[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.6254[/C][C]0.6263[/C][C]0.4559[/C][C]0.4559[/C][/ROW]
[ROW][C]Q9 excluded[/C][C]0.5512[/C][C]0.5518[/C][C]0.381[/C][C]0.381[/C][/ROW]
[ROW][C]Q14 excluded[/C][C]0.6152[/C][C]0.6153[/C][C]0.4443[/C][C]0.4443[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=102527&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=102527&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:

Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.69010.6910.60070.4271
Q3 excluded0.62540.62630.45590.4559
Q9 excluded0.55120.55180.3810.381
Q14 excluded0.61520.61530.44430.4443


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
R code (references can be found in the software module):
library(psych)
z <- t(y)
(r <- alpha(z))
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Cronbach Alpha and Related Statistics',5,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Items',1,TRUE)
a<-table.element(a,'Cronbach Alpha',1,TRUE)
a<-table.element(a,'Std. Alpha',1,TRUE)
a<-table.element(a,'G6(smc)',1,TRUE)
a<-table.element(a,'Average R',1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'All itmes',header=TRUE)
a<-table.element(a,round(r$total['raw_alpha'],4))
a<-table.element(a,round(r$total['std.alpha'],4))
a<-table.element(a,round(r$total['G6(smc)'],4))
a<-table.element(a,round(r$total['average_r'],4))
a<-table.row.end(a)
n = length(z[1,])
for (i in 1:n) {
a<-table.row.start(a)
a<-table.element(a,paste(colnames(z)[i],' excluded',sep=''),header=TRUE)
a<-table.element(a,round(r$alpha.drop[i,'raw_alpha'],4))
a<-table.element(a,round(r$alpha.drop[i,'std.alpha'],4))
a<-table.element(a,round(r$alpha.drop[i,'G6(smc)'],4))
a<-table.element(a,round(r$alpha.drop[i,'average_r'],4))
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable.tab')