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Description of Statistical Computation

Author's title

Author*Unverified author*
R Software Modulerwasp_cronbach.wasp
Title produced by softwareCronbach Alpha
Date of computationTue, 09 Sep 2025 14:21:32 +0200
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2025/Sep/09/t17574220443wf1uqa1t8vu7a5.htm/, Retrieved Tue, 25 Aug 2026 15:01:36 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=320268, Retrieved Tue, 25 Aug 2026 15:01:36 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact216

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [] [2025-09-09 12:21:32] [d41d8cd98f00b204e9800998ecf8427e] [Current]
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Dataset

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

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=320268&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=320268&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=320268&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 items0.93350.94190.92880.802
DI excluded0.92970.93690.9120.8318
DA excluded0.8910.90730.87060.7654
DM excluded0.92080.93150.90370.8193
BP excluded0.90750.91930.8940.7915

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All items & 0.9335 & 0.9419 & 0.9288 & 0.802 \tabularnewline
DI excluded & 0.9297 & 0.9369 & 0.912 & 0.8318 \tabularnewline
DA excluded & 0.891 & 0.9073 & 0.8706 & 0.7654 \tabularnewline
DM excluded & 0.9208 & 0.9315 & 0.9037 & 0.8193 \tabularnewline
BP excluded & 0.9075 & 0.9193 & 0.894 & 0.7915 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=320268&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 items[/C][C]0.9335[/C][C]0.9419[/C][C]0.9288[/C][C]0.802[/C][/ROW]
[ROW][C]DI excluded[/C][C]0.9297[/C][C]0.9369[/C][C]0.912[/C][C]0.8318[/C][/ROW]
[ROW][C]DA excluded[/C][C]0.891[/C][C]0.9073[/C][C]0.8706[/C][C]0.7654[/C][/ROW]
[ROW][C]DM excluded[/C][C]0.9208[/C][C]0.9315[/C][C]0.9037[/C][C]0.8193[/C][/ROW]
[ROW][C]BP excluded[/C][C]0.9075[/C][C]0.9193[/C][C]0.894[/C][C]0.7915[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=320268&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=320268&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 items0.93350.94190.92880.802
DI excluded0.92970.93690.9120.8318
DA excluded0.8910.90730.87060.7654
DM excluded0.92080.93150.90370.8193
BP excluded0.90750.91930.8940.7915


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 items',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')