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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 computationTue, 13 Nov 2012 10:05:45 -0500
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2012/Nov/13/t1352819158kaotd7y6kn44mka.htm/, Retrieved Tue, 10 Feb 2026 08:07:45 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=188908, Retrieved Tue, 10 Feb 2026 08:07:45 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact396

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Survey Scores] [Intrinsic Motivat...] [2010-10-12 11:18:40] [b98453cac15ba1066b407e146608df68]
- R PD  [Survey Scores] [W3 extrinsic iden...] [2012-10-16 08:01:52] [8c30f4dd45e15fd207e4faf2fdf6253e]
- RMPD      [Cronbach Alpha] [Paper deel 1 prob...] [2012-11-13 15:05:45] [d8e8301521bdb75cb7df1b08f9aff6ec] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
1	1	1	1
1	1	1	1
2	1	1	2
2	2	2	2
2	2	2	2
1	1	1	1
1	1	1	1
1	1	4	2
1	2	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
2	3	2	1
1	1	1	1
1	1	1	1
1	1	1	1
2	2	2	2
1	1	1	1
1	4	1	1
1	1	1	1
1	1	1	1
1	2	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
4	6	3	2
3	3	3	1
1	1	1	1
2	2	2	2
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	1	4
1	1	1	1
2	2	1	1
1	2	1	1
1	1	1	1
4	4	4	4
1	2	1	1
3	3	3	3
2	2	1	1
3	2	2	2
2	2	4	1
1	1	1	1
2	1	1	1
1	1	1	1
1	1	1	1
1	2	1	1
1	1	1	1
1	1	1	1
1	1	1	1
2	1	1	1
1	1	1	1
3	1	1	1
1	1	1	1
1	1	1	1
4	4	5	5
1	1	1	1
1	2	2	1
1	1	1	1
1	1	1	1
1	2	1	1
1	1	1	1
1	1	1	1
1	2	1	1
1	3	3	3
1	2	1	1
2	2	2	2
2	2	2	2
1	2	1	1
1	1	1	1
1	1	1	1
1	1	1	1
1	1	2	1
1	1	1	1
1	1	1	1
2	2	2	2
1	1	1	1
1	2	1	1
4	3	4	3
3	2	2	1
2	2	2	2
1	1	1	1
1	1	1	1
1	3	1	1
1	1	1	1
2	1	2	2
1	1	1	4
1	1	1	1
2	1	1	2
1	1	1	1
3	2	1	1
1	1	1	1
1	1	1	1
2	2	2	2
1	1	1	1
1	1	1	1
2	3	3	2
2	2	2	2
1	2	2	1
1	1	1	1
1	1	1	1
1	1	1	1
1	2	1	1
1	1	1	1
2	2	1	1
1	1	1	1
1	2	1	1
2	2	2	1
2	4	1	1
1	2	1	1
2	1	4	1
2	4	2	2
2	2	3	1
2	1	1	1
4	3	3	2
1	1	1	1
2	1	1	1
1	1	1	1
1	2	1	2
1	1	1	1
1	1	1	1
3	2	1	1
2	2	2	1
1	7	1	1
1	1	1	1
1	2	1	1
2	3	1	2
5	3	2	1
1	4	1	1
1	1	1	1
2	2	2	2
1	2	1	2
2	2	1	2
1	2	1	1
1	1	1	1
1	5	1	1
1	1	1	1
2	3	2	1
1	2	1	2
1	1	1	1
2	3	2	2
1	2	1	1
1	2	2	1
1	1	1	1
1	1	1	1
1	1	1	1
2	1	1	1
2	2	1	1
4	4	4	4
1	3	1	1
1	1	2	2
1	1	1	1
1	1	1	1

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'Sir Maurice George Kendall' @ kendall.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 & 'Sir Maurice George Kendall' @ kendall.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=188908&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]'Sir Maurice George Kendall' @ kendall.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=188908&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=188908&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'Sir Maurice George Kendall' @ kendall.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.79960.81350.78140.5217
Q5 excluded0.71090.73550.670.481
Q12 excluded0.81780.81830.75970.6002
Q19 excluded0.70490.72090.6420.4626
Q26 excluded0.76590.78090.7190.5429

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7996 & 0.8135 & 0.7814 & 0.5217 \tabularnewline
Q5 excluded & 0.7109 & 0.7355 & 0.67 & 0.481 \tabularnewline
Q12 excluded & 0.8178 & 0.8183 & 0.7597 & 0.6002 \tabularnewline
Q19 excluded & 0.7049 & 0.7209 & 0.642 & 0.4626 \tabularnewline
Q26 excluded & 0.7659 & 0.7809 & 0.719 & 0.5429 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=188908&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]0.7996[/C][C]0.8135[/C][C]0.7814[/C][C]0.5217[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.7109[/C][C]0.7355[/C][C]0.67[/C][C]0.481[/C][/ROW]
[ROW][C]Q12 excluded[/C][C]0.8178[/C][C]0.8183[/C][C]0.7597[/C][C]0.6002[/C][/ROW]
[ROW][C]Q19 excluded[/C][C]0.7049[/C][C]0.7209[/C][C]0.642[/C][C]0.4626[/C][/ROW]
[ROW][C]Q26 excluded[/C][C]0.7659[/C][C]0.7809[/C][C]0.719[/C][C]0.5429[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=188908&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=188908&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 itmes0.79960.81350.78140.5217
Q5 excluded0.71090.73550.670.481
Q12 excluded0.81780.81830.75970.6002
Q19 excluded0.70490.72090.6420.4626
Q26 excluded0.76590.78090.7190.5429


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')