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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 computationThu, 13 Oct 2011 08:42:47 -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/2011/Oct/13/t1318509812zh5d5fhdemqbnql.htm/, Retrieved Sun, 12 May 2024 23:47:21 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=128826, Retrieved Sun, 12 May 2024 23:47:21 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact119

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 11:42:57] [b98453cac15ba1066b407e146608df68]
- R  D    [Cronbach Alpha] [] [2011-10-13 12:42:47] [90397ad74249faf9640e6aa26282b307] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
7	1	1	5
5	3	3	4
5	4	4	5
5	5	5	6
5	5	5	5
7	7	7	7
7	1	1	7
5	5	5	6
3	2	2	7
6	3	3	6
7	6	6	7
6	4	4	5
5	3	3	3
3	3	3	2
7	6	6	7
5	5	5	5
7	5	5	5
7	5	5	6
7	1	1	7
6	5	5	6
5	3	3	5
7	4	4	7
4	2	2	5
7	3	3	5
7	5	5	6
7	5	5	7
7	5	5	7
3	2	2	2
7	4	4	6
5	6	6	6
7	6	6	7
5	4	4	6
5	6	6	6
4	3	3	4
5	6	6	6
6	3	3	6
7	4	4	7
5	4	4	5
7	7	7	7
7	5	5	6
6	5	5	5
6	4	4	6
7	6	6	7
7	4	4	6
6	4	4	6
6	2	2	6
4	3	3	3
7	6	6	6
5	4	4	4
6	6	6	6
5	3	3	4
3	4	4	3
7	5	5	7
6	2	2	4
6	7	7	7
5	6	6	5
5	5	5	5
7	1	1	4
7	6	6	6
7	6	6	6
6	2	2	7
6	5	5	5
7	5	5	4
7	6	6	7
5	5	5	4
7	4	4	7
6	6	6	6
5	2	2	6
6	6	6	6
5	5	5	5
5	4	4	5
6	2	2	6
6	2	2	5
6	5	5	6
7	6	6	6
6	6	6	5
5	5	5	5
7	5	5	6
7	5	5	7
6	5	5	5
7	5	5	7
6	3	3	2
6	4	4	5
7	3	3	6
6	4	4	7
7	7	7	7
7	5	5	5
5	5	5	5
3	1	1	1
6	4	4	6
6	4	4	5
5	3	3	6
6	5	5	7
6	5	5	6
6	6	6	6
7	5	5	5
6	3	3	6
6	3	3	5
6	4	4	6
7	5	5	6
6	5	5	6
5	3	3	5
5	5	5	5
6	6	6	6
6	6	6	6
6	5	5	5
5	4	4	6
6	4	4	6
4	2	2	1
6	3	3	7
7	6	6	7
7	6	6	6
5	6	6	4
5	5	5	5
7	6	6	6
3	2	2	3
7	6	6	7
5	5	5	6
7	3	3	6
5	5	5	6
3	4	4	5
6	6	6	6
5	5	5	6
4	4	4	3
7	7	7	7
6	2	2	5
7	6	6	6
2	6	6	5
5	4	4	5
6	4	4	6
6	3	3	5
6	6	6	6
2	5	5	5
6	6	6	3
7	6	6	7
4	1	1	3
7	5	5	7
7	4	4	5
6	6	6	6
6	6	6	6
2	5	5	4
7	4	4	6
7	5	5	7
5	4	4	4
5	3	3	6
6	3	3	5
5	6	6	6
6	2	2	4
6	4	4	5
6	4	4	5
5	4	4	5
6	5	5	6
7	3	3	7
7	5	5	7
6	4	4	6
6	4	4	6
6	6	6	5
7	7	7	7
6	5	5	7
5	4	4	6
5	3	3	4
5	1	1	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=128826&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=128826&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=128826&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 itmes0.80520.79910.4984
Q7 excluded0.83450.824510.6102
Q14 excluded0.68170.69550.63660.4322
Q21 excluded0.68170.69550.63660.4322
Q28 excluded0.78490.764110.5191

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8052 & 0.799 & 1 & 0.4984 \tabularnewline
Q7 excluded & 0.8345 & 0.8245 & 1 & 0.6102 \tabularnewline
Q14 excluded & 0.6817 & 0.6955 & 0.6366 & 0.4322 \tabularnewline
Q21 excluded & 0.6817 & 0.6955 & 0.6366 & 0.4322 \tabularnewline
Q28 excluded & 0.7849 & 0.7641 & 1 & 0.5191 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=128826&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]0.8052[/C][C]0.799[/C][C]1[/C][C]0.4984[/C][/ROW]
[ROW][C]Q7 excluded[/C][C]0.8345[/C][C]0.8245[/C][C]1[/C][C]0.6102[/C][/ROW]
[ROW][C]Q14 excluded[/C][C]0.6817[/C][C]0.6955[/C][C]0.6366[/C][C]0.4322[/C][/ROW]
[ROW][C]Q21 excluded[/C][C]0.6817[/C][C]0.6955[/C][C]0.6366[/C][C]0.4322[/C][/ROW]
[ROW][C]Q28 excluded[/C][C]0.7849[/C][C]0.7641[/C][C]1[/C][C]0.5191[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=128826&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=128826&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 itmes0.80520.79910.4984
Q7 excluded0.83450.824510.6102
Q14 excluded0.68170.69550.63660.4322
Q21 excluded0.68170.69550.63660.4322
Q28 excluded0.78490.764110.5191


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')