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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 12:33:41 +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/t1290947520d014i452x9qyn0t.htm/, Retrieved Fri, 03 May 2024 02:36:04 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=102516, Retrieved Fri, 03 May 2024 02:36:04 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact183

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: Popularity...] [2010-11-28 12:33:41] [350231caf55a86a218fd48dc4d2e2f8b] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
3	3	3	-2
3	3	3	-3
4	4	4	-3
3	3	3	-3
3	2	2	-3
3	3	3	-3
3	4	4	-2
2	2	2	-3
3	3	3	-3
3	4	2	-4
3	3	2	-3
3	3	2	-3
3	4	4	-2
2	2	NA	-3
3	2	3	-3
3	3	2	-3
2	2	3	-3
3	4	4	-3
2	2	2	-2
1	1	2	-4
2	3	3	-3
3	4	4	-2
3	2	3	-3
3	3	3	-3
3	3	4	-2
3	4	4	-2
2	3	2	-4
3	3	3	-2
3	4	3	-3
4	4	4	-2
3	4	4	-4
3	3	3	-3
3	4	3	-2
3	3	2	-3
2	2	2	-3
3	4	4	-1
3	3	3	-3
3	2	2	-3
3	4	3	-3
4	4	4	-2
3	4	4	-3
3	4	2	0
1	2	1	-5
2	2	2	-4
3	3	2	-3
4	4	4	-2
4	5	4	-2
2	2	2	-3
1	3	3	-4
3	3	3	-2
3	2	2	-3
1	2	1	-4
3	3	3	-3
2	2	2	-4
3	4	4	-3
3	3	3	-3
2	3	4	-4
4	4	4	-2
1	1	4	-4
3	4	4	-2
2	2	1	-4
4	4	4	-2
3	4	4	-3
4	4	4	-2
3	2	1	-3
3	4	4	-3
3	2	3	-3
3	4	3	-3
3	4	4	-2
1	1	1	-4
3	4	4	-2
3	4	3	-3
3	3	3	-4
2	3	2	-2
3	3	3	-3
3	3	3	-3
3	3	3	-3
2	3	4	-3
3	4	3	-2
2	1	1	-4
2	3	NA	-4
3	4	3	-2
3	3	4	-2
2	3	3	-4
2	4	4	-3
3	3	3	-3
2	2	2	-3
3	3	3	-3
4	4	4	-2
2	3	3	-4
3	4	4	-3
2	3	3	-4
4	4	4	-2
3	4	4	-2
3	3	3	-3
3	2	2	-3
3	1	1	-3
2	2	2	-4
3	2	2	-2
4	3	3	-3
4	4	4	-2
4	4	4	-2
3	3	5	-3
3	3	2	-3
1	1	1	-5
4	3	3	-2
1	3	3	-4
3	4	4	-3
2	2	2	-4
2	2	2	-4
3	3	2	-3
3	3	3	-3
2	3	3	-3
3	4	4	-3
3	4	4	-2
4	4	4	-2
4	4	4	-2
3	2	2	-2
3	3	3	-1
3	4	3	-2
3	3	3	-3
3	4	4	-3
1	2	3	-4
2	4	4	-3
4	4	4	-2
3	3	3	-3
4	4	4	-2
3	3	3	-3
2	3	3	-3
1	1	1	-5
4	4	4	-2
3	4	4	-2
3	2	2	-3
3	3	2	-1
4	4	4	-3
3	3	3	-3
3	4	4	-3
1	2	2	-4
4	5	5	-1
2	3	3	-2
2	4	4	-4
3	3	3	-2
3	4	4	-2
2	2	2	-4
3	3	3	-3
3	3	1	-3
2	2	2	-4
NA	NA	5	-1
3	4	4	-2
4	4	4	-2
4	3	3	-3
4	4	4	-2
2	2	2	-3
3	4	4	-3
3	4	4	-3
3	3	3	-3

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time2 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 & 2 seconds \tabularnewline
R Server & 'George Udny Yule' @ 72.249.76.132 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=102516&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]2 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=102516&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=102516&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 time2 seconds
R Server'George Udny Yule' @ 72.249.76.132






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.85770.85940.84870.6045
Q1 excluded0.82130.820.78250.6029
Q2 excluded0.77850.78660.7220.5513
Q11 excluded0.82670.82970.76940.619
-Q16 excluded0.84450.84480.80990.6447

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8577 & 0.8594 & 0.8487 & 0.6045 \tabularnewline
Q1 excluded & 0.8213 & 0.82 & 0.7825 & 0.6029 \tabularnewline
Q2 excluded & 0.7785 & 0.7866 & 0.722 & 0.5513 \tabularnewline
Q11 excluded & 0.8267 & 0.8297 & 0.7694 & 0.619 \tabularnewline
-Q16 excluded & 0.8445 & 0.8448 & 0.8099 & 0.6447 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=102516&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]0.8577[/C][C]0.8594[/C][C]0.8487[/C][C]0.6045[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.8213[/C][C]0.82[/C][C]0.7825[/C][C]0.6029[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.7785[/C][C]0.7866[/C][C]0.722[/C][C]0.5513[/C][/ROW]
[ROW][C]Q11 excluded[/C][C]0.8267[/C][C]0.8297[/C][C]0.7694[/C][C]0.619[/C][/ROW]
[ROW][C]-Q16 excluded[/C][C]0.8445[/C][C]0.8448[/C][C]0.8099[/C][C]0.6447[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=102516&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=102516&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 itmes0.85770.85940.84870.6045
Q1 excluded0.82130.820.78250.6029
Q2 excluded0.77850.78660.7220.5513
Q11 excluded0.82670.82970.76940.619
-Q16 excluded0.84450.84480.80990.6447


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')