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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 computationFri, 16 Dec 2016 22:09:15 +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/16/t14819225854zlkfkn6n748v2m.htm/, Retrieved Sun, 02 Nov 2025 02:13:27 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=300560, Retrieved Sun, 02 Nov 2025 02:13:27 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact179

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Histogram] [verdeling ITH3] [2016-12-16 20:10:08] [f1da1d1acf394d52c723b7458260b4e7]
- RM D    [Cronbach Alpha] [Cronbach alpha ITH] [2016-12-16 21:09:15] [6f830dc7e8de22be3233942ffbe3aaba] [Current]
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Dataset

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

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

\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
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=300560&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] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=300560&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=300560&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






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.70990.72210.66410.3938
ITH1 excluded0.64460.65980.56490.3927
ITH2 excluded0.63130.64070.54760.3728
ITH3 excluded0.62770.64720.55470.3795
ITH4 excluded0.69080.69380.60170.4303

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7099 & 0.7221 & 0.6641 & 0.3938 \tabularnewline
ITH1 excluded & 0.6446 & 0.6598 & 0.5649 & 0.3927 \tabularnewline
ITH2 excluded & 0.6313 & 0.6407 & 0.5476 & 0.3728 \tabularnewline
ITH3 excluded & 0.6277 & 0.6472 & 0.5547 & 0.3795 \tabularnewline
ITH4 excluded & 0.6908 & 0.6938 & 0.6017 & 0.4303 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=300560&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]0.7099[/C][C]0.7221[/C][C]0.6641[/C][C]0.3938[/C][/ROW]
[ROW][C]ITH1 excluded[/C][C]0.6446[/C][C]0.6598[/C][C]0.5649[/C][C]0.3927[/C][/ROW]
[ROW][C]ITH2 excluded[/C][C]0.6313[/C][C]0.6407[/C][C]0.5476[/C][C]0.3728[/C][/ROW]
[ROW][C]ITH3 excluded[/C][C]0.6277[/C][C]0.6472[/C][C]0.5547[/C][C]0.3795[/C][/ROW]
[ROW][C]ITH4 excluded[/C][C]0.6908[/C][C]0.6938[/C][C]0.6017[/C][C]0.4303[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=300560&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=300560&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 itmes0.70990.72210.66410.3938
ITH1 excluded0.64460.65980.56490.3927
ITH2 excluded0.63130.64070.54760.3728
ITH3 excluded0.62770.64720.55470.3795
ITH4 excluded0.69080.69380.60170.4303


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 5 ; par2 = grey ; par3 = FALSE ; par4 = 5-point Likert ;
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')