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Author's title

Author

*The author of this computation has been verified*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Sat, 06 Dec 2014 17:01:21 +0000

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/2014/Dec/06/t1417885288y18awvix61gr1qm.htm/, Retrieved Mon, 18 May 2026 19:55:24 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=263662, Retrieved Mon, 18 May 2026 19:55:24 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

383

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]
- RM      [Cronbach Alpha] [] [2014-10-16 13:44:05] [4c4ebb0b36a379d1d949ba77427e658a]
-  M D      [Cronbach Alpha] [] [2014-12-06 16:59:54] [4c4ebb0b36a379d1d949ba77427e658a]
-    D          [Cronbach Alpha] [] [2014-12-06 17:01:21] [d9810f96fa2f1581f787e7f797109997] [Current]
-    D            [Cronbach Alpha] [] [2014-12-06 17:03:17] [4c4ebb0b36a379d1d949ba77427e658a] 
-    D              [Cronbach Alpha] [] [2014-12-06 17:05:58] [4c4ebb0b36a379d1d949ba77427e658a] 

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Boxplots

2 4 1 1 2 1 1 1 1 2 1
3 3 4 2 4 2 1 2 4 4 2
2 4 4 3 4 2 2 3 4 4 2
4 4 4 2 4 4 4 5 2 3 2
2 1 2 2 5 2 2 4 3 4 3
2 2 2 2 3 3 3 3 3 3 3
2 4 4 4 2 2 2 2 4 2 3
4 4 4 3 4 3 2 4 4 4 3
2 2 2 2 3 3 1 2 3 2 3
3 3 2 2 4 3 2 2 4 4 2
2 4 1 2 4 3 1 4 5 5 3
1 2 1 1 2 2 2 2 2 2 2
2 4 2 2 4 2 2 2 2 3 2
2 2 1 2 2 2 2 2 2 3 2
2 4 4 3 4 4 2 4 3 2 2
4 2 1 2 4 0 3 2 4 4 2
1 4 2 4 4 2 2 3 2 2 2
1 2 3 2 3 3 2 3 3 3 4
4 4 3 3 3 4 2 2 3 4 1
2 4 2 1 5 2 2 4 2 3 1
3 3 2 2 4 2 2 2 4 4 2
5 5 3 3 2 4 4 4 5 3 3
4 4 4 3 4 3 3 2 3 3 3
2 4 2 2 4 2 2 2 4 4 2
1 3 2 2 3 2 2 3 2 2 1
1 1 1 1 2 1 1 1 2 2 1
2 4 2 2 4 2 3 2 2 3 2
4 2 4 1 1 3 3 1 1 1 1
2 4 2 2 3 2 2 2 3 2 2
4 3 1 2 2 3 3 2 2 2 2
4 4 4 2 4 2 2 2 2 2 2
2 4 2 2 4 4 2 2 2 4 2
2 4 1 2 2 4 4 2 2 2 3
3 4 2 2 4 2 3 4 4 3 3
2 4 3 4 2 4 4 4 2 3 3
1 2 1 1 2 1 1 2 2 1 2
2 2 2 2 4 2 2 2 4 4 4
4 2 3 4 1 2 3 2 2 3 3
1 2 1 2 2 1 1 1 1 1 2
4 4 2 3 2 2 2 2 2 3 2
2 3 2 2 4 2 2 2 2 2 2
5 5 5 5 4 5 5 5 2 2 5
1 3 1 1 3 1 1 2 2 2 1
4 2 2 2 3 1 1 1 1 2 3
3 3 4 4 5 4 4 4 2 4 4
1 3 1 2 4 1 2 5 4 4 2
2 4 2 4 2 2 2 2 2 2 2
4 4 3 2 4 3 1 3 3 5 2
5 4 3 3 4 4 3 4 3 4 5
2 2 1 1 2 2 2 2 3 2 2
4 3 2 3 3 3 2 4 3 3 2
3 2 2 3 4 2 2 3 4 4 2
4 4 4 3 4 3 3 5 4 3 2
1 1 2 2 3 4 2 2 1 2 1
4 4 4 3 4 2 2 4 4 2 2
2 3 2 3 4 2 2 1 4 2 2
4 4 3 2 2 3 4 4 4 4 4
4 4 1 1 4 1 2 4 3 4 2
2 2 2 2 3 3 2 2 4 3 1
3 4 4 2 4 2 2 4 3 4 1
3 1 2 2 4 1 1 2 3 2 2
5 1 1 1 1 1 1 1 2 2 1

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

\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=263662&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=263662&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=263662&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

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.8323	0.8339	0.8701	0.3134
PERFECTIONISM9 excluded	0.8284	0.8281	0.8612	0.3252
PERFECTIONISM10 excluded	0.8155	0.8178	0.859	0.3098
PERFECTIONISM13 excluded	0.8082	0.811	0.8431	0.3002
PERFECTIONISM14 excluded	0.815	0.8158	0.8524	0.3069
PERFECTIONISM17 excluded	0.8301	0.8324	0.8595	0.3319
PERFECTIONISM21 excluded	0.8152	0.8168	0.8518	0.3083
PERFECTIONISM25 excluded	0.8147	0.8159	0.8484	0.3072
PERFECTIONISM28 excluded	0.8032	0.8063	0.8473	0.2939
PERFECTIONISM32 excluded	0.8294	0.8315	0.8623	0.3305
PERFECTIONISM33 excluded	0.823	0.8257	0.8514	0.3214
PERFECTIONISM34 excluded	0.8185	0.8195	0.8571	0.3123

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8323 & 0.8339 & 0.8701 & 0.3134 \tabularnewline
PERFECTIONISM9 excluded & 0.8284 & 0.8281 & 0.8612 & 0.3252 \tabularnewline
PERFECTIONISM10 excluded & 0.8155 & 0.8178 & 0.859 & 0.3098 \tabularnewline
PERFECTIONISM13 excluded & 0.8082 & 0.811 & 0.8431 & 0.3002 \tabularnewline
PERFECTIONISM14 excluded & 0.815 & 0.8158 & 0.8524 & 0.3069 \tabularnewline
PERFECTIONISM17 excluded & 0.8301 & 0.8324 & 0.8595 & 0.3319 \tabularnewline
PERFECTIONISM21 excluded & 0.8152 & 0.8168 & 0.8518 & 0.3083 \tabularnewline
PERFECTIONISM25 excluded & 0.8147 & 0.8159 & 0.8484 & 0.3072 \tabularnewline
PERFECTIONISM28 excluded & 0.8032 & 0.8063 & 0.8473 & 0.2939 \tabularnewline
PERFECTIONISM32 excluded & 0.8294 & 0.8315 & 0.8623 & 0.3305 \tabularnewline
PERFECTIONISM33 excluded & 0.823 & 0.8257 & 0.8514 & 0.3214 \tabularnewline
PERFECTIONISM34 excluded & 0.8185 & 0.8195 & 0.8571 & 0.3123 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=263662&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]0.8323[/C][C]0.8339[/C][C]0.8701[/C][C]0.3134[/C][/ROW]
[ROW][C]PERFECTIONISM9 excluded[/C][C]0.8284[/C][C]0.8281[/C][C]0.8612[/C][C]0.3252[/C][/ROW]
[ROW][C]PERFECTIONISM10 excluded[/C][C]0.8155[/C][C]0.8178[/C][C]0.859[/C][C]0.3098[/C][/ROW]
[ROW][C]PERFECTIONISM13 excluded[/C][C]0.8082[/C][C]0.811[/C][C]0.8431[/C][C]0.3002[/C][/ROW]
[ROW][C]PERFECTIONISM14 excluded[/C][C]0.815[/C][C]0.8158[/C][C]0.8524[/C][C]0.3069[/C][/ROW]
[ROW][C]PERFECTIONISM17 excluded[/C][C]0.8301[/C][C]0.8324[/C][C]0.8595[/C][C]0.3319[/C][/ROW]
[ROW][C]PERFECTIONISM21 excluded[/C][C]0.8152[/C][C]0.8168[/C][C]0.8518[/C][C]0.3083[/C][/ROW]
[ROW][C]PERFECTIONISM25 excluded[/C][C]0.8147[/C][C]0.8159[/C][C]0.8484[/C][C]0.3072[/C][/ROW]
[ROW][C]PERFECTIONISM28 excluded[/C][C]0.8032[/C][C]0.8063[/C][C]0.8473[/C][C]0.2939[/C][/ROW]
[ROW][C]PERFECTIONISM32 excluded[/C][C]0.8294[/C][C]0.8315[/C][C]0.8623[/C][C]0.3305[/C][/ROW]
[ROW][C]PERFECTIONISM33 excluded[/C][C]0.823[/C][C]0.8257[/C][C]0.8514[/C][C]0.3214[/C][/ROW]
[ROW][C]PERFECTIONISM34 excluded[/C][C]0.8185[/C][C]0.8195[/C][C]0.8571[/C][C]0.3123[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=263662&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=263662&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	0.8323	0.8339	0.8701	0.3134
PERFECTIONISM9 excluded	0.8284	0.8281	0.8612	0.3252
PERFECTIONISM10 excluded	0.8155	0.8178	0.859	0.3098
PERFECTIONISM13 excluded	0.8082	0.811	0.8431	0.3002
PERFECTIONISM14 excluded	0.815	0.8158	0.8524	0.3069
PERFECTIONISM17 excluded	0.8301	0.8324	0.8595	0.3319
PERFECTIONISM21 excluded	0.8152	0.8168	0.8518	0.3083
PERFECTIONISM25 excluded	0.8147	0.8159	0.8484	0.3072
PERFECTIONISM28 excluded	0.8032	0.8063	0.8473	0.2939
PERFECTIONISM32 excluded	0.8294	0.8315	0.8623	0.3305
PERFECTIONISM33 excluded	0.823	0.8257	0.8514	0.3214
PERFECTIONISM34 excluded	0.8185	0.8195	0.8571	0.3123

Parameters (Session):

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')

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Tables (Output of Computation)

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Input Parameters & R Code