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Author's title

Author

*Unverified author*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Fri, 04 May 2012 07:41:05 -0400

Cite this page as follows

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2012/May/04/t13361318015db2hjrybhc0107.htm/, Retrieved Fri, 03 May 2024 04:12:22 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=166199, Retrieved Fri, 03 May 2024 04:12:22 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

172

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)

-       [Cronbach Alpha] [] [2012-05-04 11:41:05] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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Dataseries X:

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Histogram

Boxplots

5	5	3	3	2	2
4	4	3	5	4	4
4	5	4	4	4	4
5	3	4	4	2	2
4	3	5	4	3	3
5	2	1	1	1	1
5	5	4	4	4	4
4	4	3	2	1	1
5	5	1	1	1	1
5	4	1	2	2	1
4	4	3	4	3	2
3	2	3	4	3	4
5	5	5	1	4	1
5	5	3	2	4	4
5	4	3	2	4	2

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	0 seconds
R Server	'Gwilym Jenkins' @ jenkins.wessa.net
R Framework error message	The field 'Names of X columns' contains a hard return which cannot be interpreted. Please, resubmit your request without hard returns in the 'Names of X columns'.

\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
R Framework error message & The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'. \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=166199&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]
[ROW][C]R Framework error message[/C][C]The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'.[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=166199&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=166199&T=0

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	0 seconds
R Server	'Gwilym Jenkins' @ jenkins.wessa.net
R Framework error message	The field 'Names of X columns' contains a hard return which cannot be interpreted. Please, resubmit your request without hard returns in the 'Names of X columns'.

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.6665	0.5747	0.7704	0.1838
Q1 excluded	0.7574	0.7466	0.8167	0.3708
Q2 excluded	0.6892	0.5473	0.7644	0.1947
Q3 excluded	0.5596	0.4362	0.6983	0.134
Q4 excluded	0.6145	0.5359	0.7089	0.1876
Q5 excluded	0.4756	0.3122	0.5817	0.0832
Q6 excluded	0.5268	0.433	0.628	0.1325

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6665 & 0.5747 & 0.7704 & 0.1838 \tabularnewline
Q1 excluded & 0.7574 & 0.7466 & 0.8167 & 0.3708 \tabularnewline
Q2 excluded & 0.6892 & 0.5473 & 0.7644 & 0.1947 \tabularnewline
Q3 excluded & 0.5596 & 0.4362 & 0.6983 & 0.134 \tabularnewline
Q4 excluded & 0.6145 & 0.5359 & 0.7089 & 0.1876 \tabularnewline
Q5 excluded & 0.4756 & 0.3122 & 0.5817 & 0.0832 \tabularnewline
Q6

 excluded & 0.5268 & 0.433 & 0.628 & 0.1325 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=166199&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]0.6665[/C][C]0.5747[/C][C]0.7704[/C][C]0.1838[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.7574[/C][C]0.7466[/C][C]0.8167[/C][C]0.3708[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.6892[/C][C]0.5473[/C][C]0.7644[/C][C]0.1947[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.5596[/C][C]0.4362[/C][C]0.6983[/C][C]0.134[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.6145[/C][C]0.5359[/C][C]0.7089[/C][C]0.1876[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.4756[/C][C]0.3122[/C][C]0.5817[/C][C]0.0832[/C][/ROW]
[ROW][C]Q6

 excluded[/C][C]0.5268[/C][C]0.433[/C][C]0.628[/C][C]0.1325[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=166199&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=166199&T=1

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.6665	0.5747	0.7704	0.1838
Q1 excluded	0.7574	0.7466	0.8167	0.3708
Q2 excluded	0.6892	0.5473	0.7644	0.1947
Q3 excluded	0.5596	0.4362	0.6983	0.134
Q4 excluded	0.6145	0.5359	0.7089	0.1876
Q5 excluded	0.4756	0.3122	0.5817	0.0832
Q6 excluded	0.5268	0.433	0.628	0.1325

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')

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Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code