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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 computationSun, 20 Oct 2013 14:09:08 -0400
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2013/Oct/20/t13822925664loz26so55aqpq5.htm/, Retrieved Sat, 23 May 2026 22:42:40 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=217168, Retrieved Sat, 23 May 2026 22:42:40 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact342

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] [WS 3 vraag 2 I3] [2013-10-20 18:09:08] [a279f2be7dfac399bfd43e4361a95191] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
7	4	5	7
6	6	6	5
6	5	5	5
6	4	5	5
6	6	6	5
7	6	7	7
7	7	7	7
7	6	7	5
6	5	6	3
6	5	6	6
7	7	6	7
7	7	7	6
7	7	7	5
7	7	7	3
7	7	7	7
6	6	5	5
7	6	7	7
7	7	7	7
7	7	6	7
7	6	6	6
5	5	6	5
4	7	6	7
6	5	4	4
7	7	7	7
7	6	7	7
7	6	5	7
7	6	5	7
6	2	6	3
2	2	2	7
6	5	7	5
7	6	6	7
6	6	6	5
4	4	6	5
5	4	6	4
5	5	6	5
6	6	6	6
7	5	5	7
6	6	6	5
7	7	7	7
6	7	6	7
7	5	7	6
6	6	6	6
5	5	6	7
6	6	6	7
7	5	6	6
5	4	5	6
6	5	6	4
5	6	5	7
6	6	7	5
6	3	5	6
6	4	6	5
7	6	5	3
6	6	7	7
6	5	7	6
5	5	6	6
5	5	6	5
6	6	6	5
7	6	5	7
5	6	6	7
4	4	1	7
6	3	4	6
6	5	5	6
7	5	6	7
5	7	7	7
5	5	4	5
7	7	7	7
6	6	6	6
7	6	5	5
6	6	6	6
6	6	6	5
7	7	7	5
7	6	6	6
6	5	4	6
6	7	6	6
6	6	6	7
4	4	5	6
4	4	5	5
7	6	6	7
7	7	7	7
4	6	5	6
7	6	7	7
6	5	5	6
6	5	5	6
6	5	7	7
6	5	5	6
7	6	5	7
6	7	7	7
4	5	5	5
7	7	4	3
6	3	6	6
2	4	5	6
6	6	7	5
6	7	5	6
6	7	6	6
6	6	6	6
7	7	4	7
6	4	6	6
6	5	5	6
6	5	6	6
6	7	6	7
7	6	6	6
7	3	4	5
5	5	6	5
6	6	7	6
7	5	5	6
5	5	5	6
5	5	5	5
6	5	7	6
7	7	7	4
6	6	5	6
7	7	7	7
6	6	6	7
5	4	4	5
5	5	5	5
7	7	7	7
5	5	5	3
6	6	4	7
7	5	6	5
6	2	7	7
6	4	5	5
4	5	5	3
6	5	6	6
5	6	7	5
4	4	3	4
7	7	7	7
7	6	6	6
6	6	6	7
7	6	6	2
6	5	6	5
5	5	6	6
5	5	5	6
6	6	6	6
6	4	6	2
7	6	6	6
6	5	6	7
5	5	6	4
7	5	7	7
5	6	7	7
7	7	6	6
5	6	6	6
5	5	5	2
7	6	6	7
4	6	6	7
6	4	6	5
7	6	7	5
5	4	5	6
5	6	6	5
6	6	6	6
5	6	6	6
6	5	6	6
7	5	4	5
7	5	6	6
7	6	6	7
7	7	7	7
7	7	7	6
4	4	6	6
7	6	6	6
7	4	4	7
6	7	5	6
6	4	6	5
5	4	5	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 time2 seconds
R Server'George Udny Yule' @ yule.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 & 2 seconds \tabularnewline
R Server & 'George Udny Yule' @ yule.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=217168&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]2 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'George Udny Yule' @ yule.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=217168&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=217168&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 time2 seconds
R Server'George Udny Yule' @ yule.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.63450.64170.5950.3093
Q1_10 excluded0.540.54590.4740.2861
Q1_17 excluded0.46620.47950.40140.2349
Q1_24 excluded0.54180.54770.46940.2875
Q1_7 excluded0.69190.69230.60150.4286

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6345 & 0.6417 & 0.595 & 0.3093 \tabularnewline
Q1_10 excluded & 0.54 & 0.5459 & 0.474 & 0.2861 \tabularnewline
Q1_17 excluded & 0.4662 & 0.4795 & 0.4014 & 0.2349 \tabularnewline
Q1_24 excluded & 0.5418 & 0.5477 & 0.4694 & 0.2875 \tabularnewline
Q1_7 excluded & 0.6919 & 0.6923 & 0.6015 & 0.4286 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=217168&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]0.6345[/C][C]0.6417[/C][C]0.595[/C][C]0.3093[/C][/ROW]
[ROW][C]Q1_10 excluded[/C][C]0.54[/C][C]0.5459[/C][C]0.474[/C][C]0.2861[/C][/ROW]
[ROW][C]Q1_17 excluded[/C][C]0.4662[/C][C]0.4795[/C][C]0.4014[/C][C]0.2349[/C][/ROW]
[ROW][C]Q1_24 excluded[/C][C]0.5418[/C][C]0.5477[/C][C]0.4694[/C][C]0.2875[/C][/ROW]
[ROW][C]Q1_7 excluded[/C][C]0.6919[/C][C]0.6923[/C][C]0.6015[/C][C]0.4286[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=217168&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=217168&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 itmes0.63450.64170.5950.3093
Q1_10 excluded0.540.54590.4740.2861
Q1_17 excluded0.46620.47950.40140.2349
Q1_24 excluded0.54180.54770.46940.2875
Q1_7 excluded0.69190.69230.60150.4286


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')