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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 computationSat, 13 Dec 2014 22:03:57 +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/2014/Dec/13/t1418508294yh5acpx8faqp6dc.htm/, Retrieved Wed, 11 Feb 2026 00:34:11 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=267301, Retrieved Wed, 11 Feb 2026 00:34:11 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact291

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Survey Scores] [Paper EM1 2012] [2014-12-13 15:16:56] [81f624c2f0b20a2549c93e7c3dccf981]
- RMPD    [Cronbach Alpha] [CA E3 2012] [2014-12-13 22:03:57] [64070895b9a6ba473199a431c837c7d3] [Current]
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Dataset

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

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 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 & 1 seconds \tabularnewline
R Server & 'Herman Ole Andreas Wold' @ wold.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=267301&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]1 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=267301&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=267301&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 time1 seconds
R Server'Herman Ole Andreas Wold' @ wold.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.76710.78360.76680.4751
AMS1 excluded0.81240.81570.76980.596
AMS8 excluded0.66460.68290.63510.4179
AMS15 excluded0.72860.74960.70010.4995
AMS22 excluded0.63780.65450.57690.387

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7671 & 0.7836 & 0.7668 & 0.4751 \tabularnewline
AMS1 excluded & 0.8124 & 0.8157 & 0.7698 & 0.596 \tabularnewline
AMS8 excluded & 0.6646 & 0.6829 & 0.6351 & 0.4179 \tabularnewline
AMS15 excluded & 0.7286 & 0.7496 & 0.7001 & 0.4995 \tabularnewline
AMS22 excluded & 0.6378 & 0.6545 & 0.5769 & 0.387 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=267301&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]0.7671[/C][C]0.7836[/C][C]0.7668[/C][C]0.4751[/C][/ROW]
[ROW][C]AMS1 excluded[/C][C]0.8124[/C][C]0.8157[/C][C]0.7698[/C][C]0.596[/C][/ROW]
[ROW][C]AMS8 excluded[/C][C]0.6646[/C][C]0.6829[/C][C]0.6351[/C][C]0.4179[/C][/ROW]
[ROW][C]AMS15 excluded[/C][C]0.7286[/C][C]0.7496[/C][C]0.7001[/C][C]0.4995[/C][/ROW]
[ROW][C]AMS22 excluded[/C][C]0.6378[/C][C]0.6545[/C][C]0.5769[/C][C]0.387[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=267301&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=267301&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 itmes0.76710.78360.76680.4751
AMS1 excluded0.81240.81570.76980.596
AMS8 excluded0.66460.68290.63510.4179
AMS15 excluded0.72860.74960.70010.4995
AMS22 excluded0.63780.65450.57690.387


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
par1 = TRUE ;
R code (references can be found in the software module):
library(psych)
par1b <- T
if(par1=='FALSE') par1b <- F
z <- t(y)
(r <- alpha(z,check.keys=par1b))
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')