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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 computationWed, 15 Oct 2014 12:33:51 +0100
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/Oct/15/t1413372856tj811fh7zn5myd6.htm/, Retrieved Tue, 26 May 2026 21:33:59 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=241131, Retrieved Tue, 26 May 2026 21:33:59 +0000
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Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact309

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 11:46:14] [b98453cac15ba1066b407e146608df68]
- RMPD    [Cronbach Alpha] [WS3 - chronbach - E1] [2014-10-15 11:33:51] [afff6d6b458ee8576605d3685f592a9b] [Current]
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Dataset

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

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=241131&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=241131&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=241131&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 itmes0.73940.73960.68310.4153
Q1_3 excluded0.69190.69230.60150.4286
Q1_10 excluded0.68030.68030.59080.415
Q1_17 excluded0.6520.65310.5580.3856
Q1_24 excluded0.69420.69520.60350.4319

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7394 & 0.7396 & 0.6831 & 0.4153 \tabularnewline
Q1_3 excluded & 0.6919 & 0.6923 & 0.6015 & 0.4286 \tabularnewline
Q1_10 excluded & 0.6803 & 0.6803 & 0.5908 & 0.415 \tabularnewline
Q1_17 excluded & 0.652 & 0.6531 & 0.558 & 0.3856 \tabularnewline
Q1_24 excluded & 0.6942 & 0.6952 & 0.6035 & 0.4319 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=241131&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]0.7394[/C][C]0.7396[/C][C]0.6831[/C][C]0.4153[/C][/ROW]
[ROW][C]Q1_3 excluded[/C][C]0.6919[/C][C]0.6923[/C][C]0.6015[/C][C]0.4286[/C][/ROW]
[ROW][C]Q1_10 excluded[/C][C]0.6803[/C][C]0.6803[/C][C]0.5908[/C][C]0.415[/C][/ROW]
[ROW][C]Q1_17 excluded[/C][C]0.652[/C][C]0.6531[/C][C]0.558[/C][C]0.3856[/C][/ROW]
[ROW][C]Q1_24 excluded[/C][C]0.6942[/C][C]0.6952[/C][C]0.6035[/C][C]0.4319[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=241131&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=241131&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 itmes0.73940.73960.68310.4153
Q1_3 excluded0.69190.69230.60150.4286
Q1_10 excluded0.68030.68030.59080.415
Q1_17 excluded0.6520.65310.5580.3856
Q1_24 excluded0.69420.69520.60350.4319


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = pearson ;
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')