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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

Fri, 21 Dec 2012 10:47:48 -0500

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/Dec/21/t1356104885li6f3hmmxnzmqd6.htm/, Retrieved Thu, 30 Apr 2026 17:18:40 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=203843, Retrieved Thu, 30 Apr 2026 17:18:40 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

337

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] [Extrinsic motivat...] [2012-10-16 20:03:35] [0f86cfddc502cf698caf54991235c44d]
-    D    [Cronbach Alpha] [Extrinsic motivat...] [2012-10-16 20:09:44] [0f86cfddc502cf698caf54991235c44d]
-    D      [Cronbach Alpha] [I1 chronbach alfa] [2012-12-21 14:31:45] [0f86cfddc502cf698caf54991235c44d]
-    D        [Cronbach Alpha] [I3 Cronbach Alpha] [2012-12-21 15:10:38] [0f86cfddc502cf698caf54991235c44d]
-    D          [Cronbach Alpha] [E2 Cronbach alpha] [2012-12-21 15:21:43] [0f86cfddc502cf698caf54991235c44d]
-    D            [Cronbach Alpha] [E3 Cronbach alpha] [2012-12-21 15:39:53] [0f86cfddc502cf698caf54991235c44d]
-    D                [Cronbach Alpha] [A Cronbach alpha] [2012-12-21 15:47:48] [a1c9ee8128156b02a669e54abb47d426] [Current]

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Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 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 & 1 seconds \tabularnewline
R Server & 'George Udny Yule' @ yule.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=203843&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]1 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=203843&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=203843&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	1 seconds
R Server	'George Udny Yule' @ yule.wessa.net

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.7996	0.8135	0.7814	0.5217
Q1_5 excluded	0.7109	0.7355	0.67	0.481
Q1_12 excluded	0.8178	0.8183	0.7597	0.6002
Q1_19 excluded	0.7049	0.7209	0.642	0.4626
Q1_26 excluded	0.7659	0.7809	0.719	0.5429

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7996 & 0.8135 & 0.7814 & 0.5217 \tabularnewline
Q1_5 excluded & 0.7109 & 0.7355 & 0.67 & 0.481 \tabularnewline
Q1_12 excluded & 0.8178 & 0.8183 & 0.7597 & 0.6002 \tabularnewline
Q1_19 excluded & 0.7049 & 0.7209 & 0.642 & 0.4626 \tabularnewline
Q1_26 excluded & 0.7659 & 0.7809 & 0.719 & 0.5429 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=203843&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]0.7996[/C][C]0.8135[/C][C]0.7814[/C][C]0.5217[/C][/ROW]
[ROW][C]Q1_5 excluded[/C][C]0.7109[/C][C]0.7355[/C][C]0.67[/C][C]0.481[/C][/ROW]
[ROW][C]Q1_12 excluded[/C][C]0.8178[/C][C]0.8183[/C][C]0.7597[/C][C]0.6002[/C][/ROW]
[ROW][C]Q1_19 excluded[/C][C]0.7049[/C][C]0.7209[/C][C]0.642[/C][C]0.4626[/C][/ROW]
[ROW][C]Q1_26 excluded[/C][C]0.7659[/C][C]0.7809[/C][C]0.719[/C][C]0.5429[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=203843&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=203843&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	0.7996	0.8135	0.7814	0.5217
Q1_5 excluded	0.7109	0.7355	0.67	0.481
Q1_12 excluded	0.8178	0.8183	0.7597	0.6002
Q1_19 excluded	0.7049	0.7209	0.642	0.4626
Q1_26 excluded	0.7659	0.7809	0.719	0.5429

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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