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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, 24 Dec 2010 14:11:45 +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/2010/Dec/24/t1293200318nyraxn2mq67er6p.htm/, Retrieved Tue, 25 Aug 2026 13:22:40 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=114990, Retrieved Tue, 25 Aug 2026 13:22:40 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

440

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

-       [Cronbach Alpha] [Cronbach Alpha 3] [2010-12-24 14:11:45] [0dbff7218d83c9f93b81320e51e185be] [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	2	2
1	1	2	2	3	3	2
2	1	2	1	2	3	1
2	2	3	3	3	5	3
1	1	2	2	2	2	2
3	4	4	1	3	4	3
1	1	2	1	2	3	1
1	1	1	2	2	2	1
1	2	1	2	2	3	2
1	1	1	1	1	2	3
1	1	1	1	1	2	1
1	2	3	2	3	3	1
1	1	2	2	3	3	2
1	1	1	2	2	2	1
2	1	2	1	3	3	2
2	1	2	2	1	3	3
1	1	1	2	1	2	3
1	1	1	2	2	2	1
1	2	1	1	1	3	4
1	1	1	1	0	2	1
2	2	2	1	2	3	2
1	1	2	2	2	3	1
2	2	2	2	2	2	2
1	1	1	1	1	3	3
1	1	1	1	2	2	1
1	1	1	2	2	2	2
1	2	1	2	3	3	3
1	1	2	3	3	2	2
3	1	2	1	1	3	2
1	1	1	1	2	2	1
1	2	2	3	1	3	3
1	1	2	2	1	2	1
1	1	1	2	1	3	2
1	1	2	1	2	3	3
1	1	1	1	1	2	1
3	2	2	3	2	4	4
2	1	2	1	2	2	2
1	1	1	2	2	2	1
1	1	1	2	1	3	1
2	1	1	1	1	2	1
2	1	2	1	3	2	3
1	1	1	1	1	2	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	2	3
1	1	2	2	1	2	2
1	1	2	1	1	3	1
2	1	2	2	3	3	1
2	2	3	4	3	2	2
1	2	2	2	2	3	2
1	1	1	1	3	2	2
2	1	1	3	2	3	0
1	1	2	3	2	3	1
1	2	1	1	1	2	1
1	1	1	1	1	2	3
1	1	2	3	3	3	2
3	2	3	2	3	4	3
1	1	2	3	2	2	1
2	1	2	3	1	2	1
1	1	2	3	2	4	1
1	1	2	2	2	3	2
1	1	2	1	1	3	2
2	2	2	3	2	4	2
1	1	1	3	1	2	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	2	2
1	1	1	2	2	2	2
3	3	3	3	3	2	2
1	2	2	1	2	3	2
2	2	3	2	2	4	2
2	1	1	2	2	2	3
1	1	1	1	2	2	1
3	1	2	1	1	2	1
1	1	1	3	1	2	1
1	1	1	2	1	2	1
1	1	2	1	4	2	1
1	1	3	2	2	2	1
1	1	1	2	2	2	4
1	1	2	1	3	3	2
1	1	1	3	2	2	2
1	1	2	3	3	4	1
2	3	3	3	4	3	4
1	1	2	2	1	2	4
2	1	2	1	3	3	3
2	1	2	1	1	3	3
2	1	2	2	2	4	2
1	1	0	2	1	2	3
1	1	2	1	1	2	3
2	1	2	2	3	3	3
1	1	1	2	2	2	2
1	1	2	2	2	2	1
1	1	2	1	2	2	1
1	1	2	1	2	2	1
2	2	2	3	2	2	3
1	1	1	2	2	3	2
1	1	1	1	1	2	4
2	1	2	3	2	2	4
3	2	3	2	3	3	3
1	1	1	2	2	2	2
2	2	2	3	2	4	1
3	2	2	2	1	4	1
3	3	3	3	4	4	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	2	4
2	1	1	2	2	2	2
1	1	1	1	3	2	1
1	1	2	2	2	4	2
1	1	1	3	4	2	1
1	1	1	1	2	2	1
1	1	1	3	4	2	3
2	2	3	3	1	3	1
2	1	1	2	2	3	3
1	1	1	1	2	2	3
1	1	1	1	1	2	1
3	1	1	1	1	2	2
2	1	1	1	1	3	2
1	1	1	1	1	2	1
1	1	1	1	1	2	3
1	1	1	2	2	2	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	2	1
2	1	2	2	2	3	3
2	1	2	1	3	2	1
1	1	2	2	3	2	3
4	4	4	3	2	4	2
2	1	2	2	2	3	2
2	2	2	2	2	3	3
1	1	1	1	2	2	3
1	1	1	2	2	2	3
1	1	1	1	1	3	2
1	1	1	4	1	2	4
1	1	1	1	3	3	2
1	1	2	2	2	3	1
2	1	1	2	2	2	1
1	1	2	1	3	2	2
1	1	1	1	3	3	3
2	1	1	2	1	2	2
2	2	2	4	3	2	4
1	1	2	1	2	2	3
2	2	3	1	1	4	4
1	1	1	1	1	2	2
1	1	1	2	2	2	3
2	3	3	2	2	5	2
4	1	3	1	3	4	2
2	1	2	1	3	3	3
2	1	1	2	1	3	4
1	1	1	2	2	2	2
1	1	1	1	2	2	1
2	2	2	3	3	3	3
2	1	3	3	4	2	1

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	'RServer@AstonUniversity' @ vre.aston.ac.uk

\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 & 'RServer@AstonUniversity' @ vre.aston.ac.uk \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=114990&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]'RServer@AstonUniversity' @ vre.aston.ac.uk[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=114990&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=114990&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	'RServer@AstonUniversity' @ vre.aston.ac.uk

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.6908	0.7252	0.7316	0.2738
Q31_1 excluded	0.6303	0.6703	0.6722	0.2531
Q31_2 excluded	0.6184	0.6454	0.6465	0.2327
Q31_3 excluded	0.6016	0.6402	0.6311	0.2287
Q31_4 excluded	0.6901	0.7299	0.7296	0.3105
Q31_5 excluded	0.6792	0.7193	0.7169	0.2993
Q31_6 excluded	0.6451	0.6833	0.6879	0.2645
Q31_7 excluded	0.7258	0.745	0.7418	0.3275

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6908 & 0.7252 & 0.7316 & 0.2738 \tabularnewline
Q31_1 excluded & 0.6303 & 0.6703 & 0.6722 & 0.2531 \tabularnewline
Q31_2 excluded & 0.6184 & 0.6454 & 0.6465 & 0.2327 \tabularnewline
Q31_3 excluded & 0.6016 & 0.6402 & 0.6311 & 0.2287 \tabularnewline
Q31_4 excluded & 0.6901 & 0.7299 & 0.7296 & 0.3105 \tabularnewline
Q31_5 excluded & 0.6792 & 0.7193 & 0.7169 & 0.2993 \tabularnewline
Q31_6 excluded & 0.6451 & 0.6833 & 0.6879 & 0.2645 \tabularnewline
Q31_7 excluded & 0.7258 & 0.745 & 0.7418 & 0.3275 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=114990&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]0.6908[/C][C]0.7252[/C][C]0.7316[/C][C]0.2738[/C][/ROW]
[ROW][C]Q31_1 excluded[/C][C]0.6303[/C][C]0.6703[/C][C]0.6722[/C][C]0.2531[/C][/ROW]
[ROW][C]Q31_2 excluded[/C][C]0.6184[/C][C]0.6454[/C][C]0.6465[/C][C]0.2327[/C][/ROW]
[ROW][C]Q31_3 excluded[/C][C]0.6016[/C][C]0.6402[/C][C]0.6311[/C][C]0.2287[/C][/ROW]
[ROW][C]Q31_4 excluded[/C][C]0.6901[/C][C]0.7299[/C][C]0.7296[/C][C]0.3105[/C][/ROW]
[ROW][C]Q31_5 excluded[/C][C]0.6792[/C][C]0.7193[/C][C]0.7169[/C][C]0.2993[/C][/ROW]
[ROW][C]Q31_6 excluded[/C][C]0.6451[/C][C]0.6833[/C][C]0.6879[/C][C]0.2645[/C][/ROW]
[ROW][C]Q31_7 excluded[/C][C]0.7258[/C][C]0.745[/C][C]0.7418[/C][C]0.3275[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=114990&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=114990&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	0.6908	0.7252	0.7316	0.2738
Q31_1 excluded	0.6303	0.6703	0.6722	0.2531
Q31_2 excluded	0.6184	0.6454	0.6465	0.2327
Q31_3 excluded	0.6016	0.6402	0.6311	0.2287
Q31_4 excluded	0.6901	0.7299	0.7296	0.3105
Q31_5 excluded	0.6792	0.7193	0.7169	0.2993
Q31_6 excluded	0.6451	0.6833	0.6879	0.2645
Q31_7 excluded	0.7258	0.745	0.7418	0.3275

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')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code