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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 computationSat, 09 Dec 2017 17:08:00 +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/2017/Dec/09/t1512835691v9hbfixjdm1y60a.htm/, Retrieved Sun, 02 Nov 2025 18:23:53 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=308877, Retrieved Sun, 02 Nov 2025 18:23:53 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact249

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [C.A] [2017-12-09 16:08:00] [257418b76be273634a64f762d7e0e083] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
3	3	2	3	3
5	5	4	4	3
4	4	4	4	4
4	4	4	4	4
3	3	5	5	4
3	3	4	4	4
3	4	3	4	4
3	3	4	3	4
3	3	2	3	4
3	4	3	4	4
3	3	3	3	4
4	3	3	4	3
4	3	4	4	4
4	4	4	5	4
4	2	4	2	3
5	4	4	4	4
2	2	4	4	4
4	3	4	3	4
3	3	4	3	5
3	3	4	4	3
3	4	4	3	4
3	2	4	4	3
2	3	3	3	4
3	2	4	3	3
4	4	3	4	4
3	2	3	2	4
3	4	4	4	4
4	3	3	5	4
3	3	3	3	3
4	3	3	4	3
3	5	5	4	4
2	2	2	4	3
1	2	3	1	5
2	1	2	5	5
4	4	4	4	3
3	4	4	4	4
3	3	3	2	3
4	4	3	3	4
3	2	3	3	3
4	4	3	3	3
4	3	4	4	3
2	3	2	4	2
2	2	2	3	3
3	2	4	4	4
4	4	4	4	4
4	2	2	4	4
4	4	5	5	4
2	3	4	3	4
4	5	5	5	4
4	4	4	4	4
5	5	4	4	5
3	2	2	3	3
3	4	4	3	4
4	3	4	3	4
2	3	4	4	4
3	3	4	3	4
3	3	4	4	4
5	3	4	5	4
2	2	2	4	3
4	4	4	3	4
3	3	3	4	3
4	3	3	3	4
4	3	3	4	4
4	3	3	4	4
2	2	3	3	2
4	4	4	3	4
4	3	4	2	3
4	4	4	4	4
5	4	4	3	5
3	4	5	3	3
3	2	3	2	3
3	4	3	4	3
4	3	4	4	5
4	4	4	4	5
4	3	4	4	4
2	3	4	3	3
3	3	3	2	3
3	2	3	3	4
2	4	4	3	3
3	4	4	5	3
2	4	3	4	4
4	4	4	2	3
3	3	3	3	3
4	3	3	5	4
4	4	4	5	4
4	4	5	3	3
3	3	4	4	4
4	3	4	4	3
3	3	2	4	3
3	4	4	4	4
3	4	4	4	4
3	4	4	3	4
4	4	4	4	4
4	3	3	4	4
2	2	2	3	3
4	2	3	2	4
4	2	3	3	5
4	2	3	3	3
4	3	3	4	3
4	4	4	4	4
2	3	1	2	3
2	3	3	3	3
3	3	2	2	4
2	2	2	2	4
4	4	4	3	4
4	4	4	5	5
3	3	3	3	4
2	3	4	2	4
3	3	3	3	3
4	3	3	4	4
2	2	3	3	2
4	2	4	4	3
2	2	2	2	2
2	2	2	2	2
3	4	4	4	3
2	3	3	4	4
5	3	4	5	5
2	2	2	3	3
2	1	1	4	2
4	4	4	4	4
4	4	4	4	4
4	4	3	4	4
1	1	2	3	3
3	2	2	3	3
3	3	3	3	3
4	4	4	3	4
3	4	4	3	3
3	3	3	2	4
2	2	2	3	3
4	3	2	3	2
2	4	2	2	3
3	3	4	3	2
4	4	4	4	4
2	2	2	4	2
3	2	4	3	4
3	1	3	4	4
3	3	4	3	4
3	3	2	3	4
2	3	3	2	2
3	3	4	3	4
2	2	2	3	2
3	2	3	4	4
2	3	2	5	4
3	2	3	4	3
4	3	3	3	4
1	1	1	3	1
4	3	2	3	2
5	5	4	4	3
4	4	4	4	4
2	2	4	4	3
1	2	3	4	3
4	4	4	4	4
3	3	3	3	3
3	3	4	2	4
4	4	4	3	4
3	2	2	5	4
3	4	4	4	4
3	3	4	3	4
4	2	4	4	5
3	3	3	3	2
4	3	3	4	2
3	4	3	2	4
2	3	3	3	3
2	2	3	2	2
4	3	3	3	4
4	3	5	4	4
4	4	4	4	4
4	3	3	4	3
2	2	4	2	3
4	4	4	4	4
3	3	4	3	4
4	3	3	3	3
3	4	4	4	4
4	3	4	5	4
3	3	3	4	4
2	3	3	2	4
4	4	4	4	4
4	3	4	4	4
4	4	3	4	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=308877&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=308877&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=308877&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 itmes0.75080.74940.72250.3742
Q1 excluded0.67470.67460.63090.3413
Q2 excluded0.68580.68590.63060.3532
Q3 excluded0.67810.67590.62530.3427
Q4 excluded0.75840.75660.71220.4373
Q5 excluded0.7260.72450.68380.3967

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7508 & 0.7494 & 0.7225 & 0.3742 \tabularnewline
Q1 excluded & 0.6747 & 0.6746 & 0.6309 & 0.3413 \tabularnewline
Q2 excluded & 0.6858 & 0.6859 & 0.6306 & 0.3532 \tabularnewline
Q3 excluded & 0.6781 & 0.6759 & 0.6253 & 0.3427 \tabularnewline
Q4 excluded & 0.7584 & 0.7566 & 0.7122 & 0.4373 \tabularnewline
Q5 excluded & 0.726 & 0.7245 & 0.6838 & 0.3967 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=308877&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]0.7508[/C][C]0.7494[/C][C]0.7225[/C][C]0.3742[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.6747[/C][C]0.6746[/C][C]0.6309[/C][C]0.3413[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.6858[/C][C]0.6859[/C][C]0.6306[/C][C]0.3532[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.6781[/C][C]0.6759[/C][C]0.6253[/C][C]0.3427[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.7584[/C][C]0.7566[/C][C]0.7122[/C][C]0.4373[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.726[/C][C]0.7245[/C][C]0.6838[/C][C]0.3967[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=308877&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=308877&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 itmes0.75080.74940.72250.3742
Q1 excluded0.67470.67460.63090.3413
Q2 excluded0.68580.68590.63060.3532
Q3 excluded0.67810.67590.62530.3427
Q4 excluded0.75840.75660.71220.4373
Q5 excluded0.7260.72450.68380.3967


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 10 ; par2 = blue ; par3 = TRUE ; par4 = Unknown ;
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')