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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

Mon, 17 Dec 2012 09:54:55 -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/17/t1355756116gmskcdnx20e9p2i.htm/, Retrieved Sat, 14 Feb 2026 04:12:57 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=200985, Retrieved Sat, 14 Feb 2026 04:12:57 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

442

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

-     [Multiple Regression] [] [2012-12-02 10:36:10] [b98453cac15ba1066b407e146608df68]
- RM D    [Cronbach Alpha] [] [2012-12-17 14:54:55] [d76b387543b13b5e3afd8ff9e5fdc89f] [Current]

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Dataseries X:

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Histogram

Boxplots

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

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	2 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=200985&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=200985&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=200985&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	2 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	0.6911	0.7242	0.7314	0.2728
x1 excluded	0.6303	0.6691	0.6705	0.2521
x2 excluded	0.6176	0.6436	0.6462	0.2313
x3 excluded	0.6019	0.6382	0.63	0.2272
x4 excluded	0.6899	0.7282	0.7287	0.3087
x5 excluded	0.684	0.7218	0.7205	0.3019
x6 excluded	0.6465	0.6833	0.6886	0.2645
x7 excluded	0.7225	0.742	0.7399	0.3241

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6911 & 0.7242 & 0.7314 & 0.2728 \tabularnewline
x1 excluded & 0.6303 & 0.6691 & 0.6705 & 0.2521 \tabularnewline
x2 excluded & 0.6176 & 0.6436 & 0.6462 & 0.2313 \tabularnewline
x3 excluded & 0.6019 & 0.6382 & 0.63 & 0.2272 \tabularnewline
x4 excluded & 0.6899 & 0.7282 & 0.7287 & 0.3087 \tabularnewline
x5 excluded & 0.684 & 0.7218 & 0.7205 & 0.3019 \tabularnewline
x6 excluded & 0.6465 & 0.6833 & 0.6886 & 0.2645 \tabularnewline
x7 excluded & 0.7225 & 0.742 & 0.7399 & 0.3241 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=200985&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]0.6911[/C][C]0.7242[/C][C]0.7314[/C][C]0.2728[/C][/ROW]
[ROW][C]x1 excluded[/C][C]0.6303[/C][C]0.6691[/C][C]0.6705[/C][C]0.2521[/C][/ROW]
[ROW][C]x2 excluded[/C][C]0.6176[/C][C]0.6436[/C][C]0.6462[/C][C]0.2313[/C][/ROW]
[ROW][C]x3 excluded[/C][C]0.6019[/C][C]0.6382[/C][C]0.63[/C][C]0.2272[/C][/ROW]
[ROW][C]x4 excluded[/C][C]0.6899[/C][C]0.7282[/C][C]0.7287[/C][C]0.3087[/C][/ROW]
[ROW][C]x5 excluded[/C][C]0.684[/C][C]0.7218[/C][C]0.7205[/C][C]0.3019[/C][/ROW]
[ROW][C]x6 excluded[/C][C]0.6465[/C][C]0.6833[/C][C]0.6886[/C][C]0.2645[/C][/ROW]
[ROW][C]x7 excluded[/C][C]0.7225[/C][C]0.742[/C][C]0.7399[/C][C]0.3241[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=200985&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=200985&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	0.6911	0.7242	0.7314	0.2728
x1 excluded	0.6303	0.6691	0.6705	0.2521
x2 excluded	0.6176	0.6436	0.6462	0.2313
x3 excluded	0.6019	0.6382	0.63	0.2272
x4 excluded	0.6899	0.7282	0.7287	0.3087
x5 excluded	0.684	0.7218	0.7205	0.3019
x6 excluded	0.6465	0.6833	0.6886	0.2645
x7 excluded	0.7225	0.742	0.7399	0.3241

Parameters (Session):

par1 = 2 ; par2 = Do not include Seasonal Dummies ; par3 = No Linear Trend ;

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')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code