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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, 12 Nov 2016 18:55:20 +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/Nov/12/t14789734625iwvd670n4v2mmd.htm/, Retrieved Sat, 16 May 2026 00:51:21 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=296743, Retrieved Sat, 16 May 2026 00:51:21 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact434

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [ervaarde controle...] [2016-11-12 17:55:20] [a5a1109b2531d70fe6d77f4f71bfe676] [Current]
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Dataset

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

\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=296743&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=296743&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=296743&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 itmes0.55940.52560.48570.2697
Q1 excluded0.15990.18540.10220.1022
Q2 excluded0.25420.28530.16640.1664
Q4 excluded0.7010.70170.54050.5405

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.5594 & 0.5256 & 0.4857 & 0.2697 \tabularnewline
Q1 excluded & 0.1599 & 0.1854 & 0.1022 & 0.1022 \tabularnewline
Q2 excluded & 0.2542 & 0.2853 & 0.1664 & 0.1664 \tabularnewline
Q4 excluded & 0.701 & 0.7017 & 0.5405 & 0.5405 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=296743&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]0.5594[/C][C]0.5256[/C][C]0.4857[/C][C]0.2697[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.1599[/C][C]0.1854[/C][C]0.1022[/C][C]0.1022[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.2542[/C][C]0.2853[/C][C]0.1664[/C][C]0.1664[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.701[/C][C]0.7017[/C][C]0.5405[/C][C]0.5405[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=296743&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=296743&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 itmes0.55940.52560.48570.2697
Q1 excluded0.15990.18540.10220.1022
Q2 excluded0.25420.28530.16640.1664
Q4 excluded0.7010.70170.54050.5405


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = TRUE ;
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')