FreeStatistics.org

Free Statistics

of Irreproducible Research!

Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_cronbach.wasp
Title produced by softwareCronbach Alpha
Date of computationTue, 20 Dec 2016 12:28:17 +0100
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2016/Dec/20/t1482233357ukfda8p6yi9htp8.htm/, Retrieved Tue, 10 Feb 2026 08:26:28 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=301611, Retrieved Tue, 10 Feb 2026 08:26:28 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywordsCronbach Apha: TVCD 1-4
Estimated Impact357

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [Cronbach Apha: TV...] [2016-12-20 11:28:17] [16e0888ced5f28ae20ce1ff74f042113] [Current]
Feedback Forum

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
4	3	3	3
5	4	4	3
4	5	5	3
4	4	4	3
4	4	4	4
5	3	5	3
5	3	5	5
4	4	5	3
4	4	5	4
5	4	5	3
5	4	5	3
4	4	4	3
4	4	4	4
4	3	4	3
4	4	4	4
5	4	5	3
4	4	4	4
3	4	4	4
4	4	5	4
5	4	4	3
4	4	4	3
5	4	4	3
4	4	4	3
4	4	5	4
3	3	5	3
4	4	4	4
4	4	4	3
4	4	5	3
4	4	5	3
3	4	3	3
4	3	5	3
5	4	4	4
4	4	5	2
4	2	4	3
5	4	5	3
4	4	4	3
3	3	4	4
2	4	4	4
5	4	5	4
4	4	4	3
5	4	5	3
4	3	3	3
4	4	5	3
4	4	4	3
3	4	5	3
4	4	5	3
4	4	4	3
3	4	3	3
3	3	3	3
5	4	5	3
5	5	5	3
5	5	4	4
2	3	3	3
3	4	4	3
2	4	4	3
4	4	4	3
5	5	4	3
4	4	4	4
4	4	4	3
5	4	5	3
5	4	4	3
4	5	4	3
5	4	4	3
4	4	4	3
4	2	4	2
5	4	5	3
3	4	4	3
2	4	4	4
5	4	4	3
4	4	4	3
4	4	4	3
4	4	3	3
3	3	4	3
5	5	4	4
4	4	4	3
5	3	5	3
3	4	4	3
2	4	4	5
5	4	5	3
4	4	5	3
1	3	3	3
4	4	5	3
5	4	4	4
4	4	5	4
5	5	5	5
4	4	5	4
5	4	5	4
4	4	4	3
5	4	4	4
5	4	2	3
4	4	4	3
4	5	5	3
4	4	5	3
4	5	5	3
4	4	4	3
4	4	4	4
4	5	4	5
5	4	5	4
5	4	4	3
4	4	4	4
4	4	5	4
4	4	4	3
2	4	4	3
4	4	4	3
4	4	5	4
4	4	4	4
4	4	5	3
4	4	4	3
4	4	4	4
4	4	4	4
4	4	3	3
4	4	4	3
3	3	3	3
5	4	5	5
4	4	4	4
5	4	4	3
4	4	5	4
5	4	4	3
3	4	4	3
4	4	4	3
3	4	4	3
4	4	4	4
4	4	4	3
4	4	5	4
4	4	4	3
5	4	4	3
4	4	5	3
4	4	4	3
4	4	4	3
2	3	3	3
4	4	4	4
4	5	4	5
3	3	4	3
2	3	3	3
4	4	4	4
4	4	5	5
3	3	3	3
4	4	4	3
5	5	5	4
4	5	5	3
3	3	4	3
3	4	4	3
4	4	4	4
3	4	3	3
4	5	5	3
2	4	4	4
5	5	5	4
4	3	4	3
4	4	4	4
3	3	3	3
4	4	4	4
5	4	4	3
4	4	4	3
2	4	3	3
4	4	4	3
5	4	5	3
4	4	3	3
4	4	4	3
5	4	5	4
4	4	4	3
5	5	5	3
3	4	4	4
4	4	4	3
4	4	4	4
3	3	4	3
4	4	4	4
4	4	3	3
3	4	4	5

Tables (Output of Computation)





Summary of computational transaction
Raw Input view raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R ServerBig Analytics Cloud Computing Center
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 Outputview raw output of R engine  \tabularnewline
Computing time1 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \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=301611&T=0

[TABLE]
[ROW]
Summary of computational transaction[/C][/ROW] [ROW]Raw Input[/C] view raw input (R code) [/C][/ROW] [ROW]Raw Output[/C]view raw output of R engine [/C][/ROW] [ROW]Computing time[/C]1 seconds[/C][/ROW] [ROW]R Server[/C]Big Analytics Cloud Computing Center[/C][/ROW] [ROW]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=301611&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=301611&T=0

As an alternative you can also use a QR Code:  
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 Outputview raw output of R engine
Computing time1 seconds
R ServerBig Analytics Cloud Computing Center
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
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.56750.57730.53550.2545
TVDC1 excluded0.47680.48460.39120.2386
TVDC2 excluded0.45630.45240.40110.2159
TVDC3 excluded0.40470.43940.37150.2072
TVDC4 excluded0.61490.62420.5310.3564

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.5675 & 0.5773 & 0.5355 & 0.2545 \tabularnewline
TVDC1 excluded & 0.4768 & 0.4846 & 0.3912 & 0.2386 \tabularnewline
TVDC2 excluded & 0.4563 & 0.4524 & 0.4011 & 0.2159 \tabularnewline
TVDC3 excluded & 0.4047 & 0.4394 & 0.3715 & 0.2072 \tabularnewline
TVDC4
 excluded & 0.6149 & 0.6242 & 0.531 & 0.3564 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=301611&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]0.5675[/C][C]0.5773[/C][C]0.5355[/C][C]0.2545[/C][/ROW]
[ROW][C]TVDC1 excluded[/C][C]0.4768[/C][C]0.4846[/C][C]0.3912[/C][C]0.2386[/C][/ROW]
[ROW][C]TVDC2 excluded[/C][C]0.4563[/C][C]0.4524[/C][C]0.4011[/C][C]0.2159[/C][/ROW]
[ROW][C]TVDC3 excluded[/C][C]0.4047[/C][C]0.4394[/C][C]0.3715[/C][C]0.2072[/C][/ROW]
[ROW][C]TVDC4
 excluded[/C][C]0.6149[/C][C]0.6242[/C][C]0.531[/C][C]0.3564[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=301611&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=301611&T=1

As an alternative you can also use a QR Code:  
QR Code


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

Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.56750.57730.53550.2545
TVDC1 excluded0.47680.48460.39120.2386
TVDC2 excluded0.45630.45240.40110.2159
TVDC3 excluded0.40470.43940.37150.2072
TVDC4 excluded0.61490.62420.5310.3564


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 12 ;
Parameters (R input):
par1 = TRUE ;
R code (references can be found in the software module):
library(psych)
par1b <- T
if(par1=='FALSE') par1b <- F
z <- t(y)
(r <- alpha(z,check.keys=par1b))
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')