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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, 09 Dec 2014 09:29:44 +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/09/t141811740866qvu1jj57c3xcd.htm/, Retrieved Sun, 08 Feb 2026 04:21:13 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=264352, Retrieved Sun, 08 Feb 2026 04:21:13 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact376

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]
- R  D  [Cronbach Alpha] [] [2011-10-18 12:27:58] [b98453cac15ba1066b407e146608df68]
- RMPD      [Cronbach Alpha] [E1 Cronbach alpha] [2014-12-09 09:29:44] [0eaac0c325f91461a250342d6072f4e0] [Current]
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Dataset

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

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' @ jenkins.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 & 0 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=264352&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' @ jenkins.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=264352&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264352&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' @ jenkins.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.72080.72270.66840.3945
Q3 excluded0.66810.66860.57490.4021
Q10 excluded0.61870.62530.52830.3575
Q17 excluded0.67070.67110.58170.4048
Q24 excluded0.67710.67890.59420.4135

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7208 & 0.7227 & 0.6684 & 0.3945 \tabularnewline
Q3 excluded & 0.6681 & 0.6686 & 0.5749 & 0.4021 \tabularnewline
Q10 excluded & 0.6187 & 0.6253 & 0.5283 & 0.3575 \tabularnewline
Q17 excluded & 0.6707 & 0.6711 & 0.5817 & 0.4048 \tabularnewline
Q24 excluded & 0.6771 & 0.6789 & 0.5942 & 0.4135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=264352&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]0.7208[/C][C]0.7227[/C][C]0.6684[/C][C]0.3945[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.6681[/C][C]0.6686[/C][C]0.5749[/C][C]0.4021[/C][/ROW]
[ROW][C]Q10 excluded[/C][C]0.6187[/C][C]0.6253[/C][C]0.5283[/C][C]0.3575[/C][/ROW]
[ROW][C]Q17 excluded[/C][C]0.6707[/C][C]0.6711[/C][C]0.5817[/C][C]0.4048[/C][/ROW]
[ROW][C]Q24 excluded[/C][C]0.6771[/C][C]0.6789[/C][C]0.5942[/C][C]0.4135[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=264352&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264352&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 itmes0.72080.72270.66840.3945
Q3 excluded0.66810.66860.57490.4021
Q10 excluded0.61870.62530.52830.3575
Q17 excluded0.67070.67110.58170.4048
Q24 excluded0.67710.67890.59420.4135


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 1 2 3 4 5 6 7 ;
Parameters (R input):
par1 = TRUE ;
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')