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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 computationFri, 17 Dec 2010 14:27:02 +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/Dec/17/t12925958941nby2ndurrvopfr.htm/, Retrieved Wed, 13 May 2026 08:07:59 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=111484, Retrieved Wed, 13 May 2026 08:07:59 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact388

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Cronbach Alpha] [Intrinsic Motivat...] [2010-10-12 11:40:37] [b98453cac15ba1066b407e146608df68]
-    D  [Cronbach Alpha] [Extr 1] [2010-10-17 19:07:13] [87116ee6ef949037dfa02b8eb1a3bf97]
-         [Cronbach Alpha] [] [2010-12-17 13:23:12] [87116ee6ef949037dfa02b8eb1a3bf97]
- R  D        [Cronbach Alpha] [Cronbach Alpha - DA] [2010-12-17 14:27:02] [66b4703b90a9701067ac75b10c82aca9] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
2	3	2	2
2	2	2	3
2	2	2	3
4	3	3	4
2	2	2	2
2	2	2	2
4	2	1	4
4	2	2	2
2	1	3	3
4	3	4	4
3	2	5	4
2	2	4	3
4	4	4	2
1	1	2	2
5	5	5	5
2	2	3	2
2	4	2	2
4	1	1	2
3	3	3	2
4	2	4	4
4	3	2	2
4	4	4	4
5	2	2	5
3	2	4	2
3	2	4	2
4	3	2	3
2	3	2	2
2	1	2	2
3	3	4	3
2	4	2	2
3	2	2	2
3	2	2	2
4	2	3	4
4	4	4	4
4	2	4	2
2	2	1	1
4	3	3	4
4	2	4	4
2	2	4	2
1	1	1	1
2	2	4	4
4	3	4	3
2	2	3	2
2	2	3	2
4	2	2	2
4	4	4	2
2	2	3	3
2	2	3	2
4	4	3	3
2	2	2	2
2	2	3	2
2	2	2	2
3	2	2	2
2	2	3	2
3	2	2	2
4	4	3	4
2	2	2	2
3	2	3	2
2	2	2	2
4	4	3	3
4	2	3	2
2	3	3	2
2	4	4	2
4	4	3	3
2	2	2	3
4	3	4	2
4	4	3	4
2	2	2	2
2	1	2	2
3	2	3	2
2	2	3	3
3	3	4	3
5	2	2	2
2	2	2	2
4	2	3	3
3	2	2	2
2	2	3	3
3	2	2	4
3	2	3	3
3	2	3	2
4	4	4	4
4	4	4	4
2	2	2	2
1	1	1	3
3	3	3	2
3	3	3	3
4	2	4	4
3	2	2	2
3	4	2	2
2	2	2	2
3	2	0	3
0	3	2	2
2	4	5	5
4	2	3	4
2	2	2	2
2	4	2	3
4	3	3	4
2	4	2	2
4	2	2	2
4	4	2	4
3	4	2	5
3	3	2	2
4	2	2	4
2	2	2	3
5	4	4	3
2	2	2	2
2	1	2	4
4	4	4	4
4	4	3	2
4	4	3	2
2	2	2	2
5	2	3	4
4	2	2	3
3	2	2	2
2	1	3	2
3	4	3	3
3	2	3	2
2	2	2	2
1	2	2	2
3	3	2	3
4	2	2	3
4	3	3	4
2	2	1	1
2	2	4	2
3	2	2	2
2	2	4	4
3	2	4	2
4	4	3	3
4	2	2	4
4	3	4	3
4	4	2	4
2	2	2	2
3	3	2	3
4	2	4	2
2	4	2	1
3	4	5	4
4	4	2	1
3	2	4	2
3	2	4	3
4	3	4	4
3	3	4	3
1	1	1	3
2	2	3	4
1	2	2	2
2	2	2	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'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 & 1 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=111484&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]'Gwilym Jenkins' @ 72.249.127.135[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=111484&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=111484&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'Gwilym Jenkins' @ 72.249.127.135






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.69130.69090.6340.3585
Q1_17 excluded0.59630.59560.49860.3292
Q1_28 excluded0.6440.64530.55160.3775
Q1_32 excluded0.63870.63670.54840.3688
Q1_33 excluded0.62480.62620.52930.3583

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6913 & 0.6909 & 0.634 & 0.3585 \tabularnewline
Q1_17 excluded & 0.5963 & 0.5956 & 0.4986 & 0.3292 \tabularnewline
Q1_28 excluded & 0.644 & 0.6453 & 0.5516 & 0.3775 \tabularnewline
Q1_32 excluded & 0.6387 & 0.6367 & 0.5484 & 0.3688 \tabularnewline
Q1_33 excluded & 0.6248 & 0.6262 & 0.5293 & 0.3583 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=111484&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]0.6913[/C][C]0.6909[/C][C]0.634[/C][C]0.3585[/C][/ROW]
[ROW][C]Q1_17 excluded[/C][C]0.5963[/C][C]0.5956[/C][C]0.4986[/C][C]0.3292[/C][/ROW]
[ROW][C]Q1_28 excluded[/C][C]0.644[/C][C]0.6453[/C][C]0.5516[/C][C]0.3775[/C][/ROW]
[ROW][C]Q1_32 excluded[/C][C]0.6387[/C][C]0.6367[/C][C]0.5484[/C][C]0.3688[/C][/ROW]
[ROW][C]Q1_33 excluded[/C][C]0.6248[/C][C]0.6262[/C][C]0.5293[/C][C]0.3583[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=111484&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=111484&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 itmes0.69130.69090.6340.3585
Q1_17 excluded0.59630.59560.49860.3292
Q1_28 excluded0.6440.64530.55160.3775
Q1_32 excluded0.63870.63670.54840.3688
Q1_33 excluded0.62480.62620.52930.3583


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')