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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 computationFri, 18 Mar 2022 02:18:23 +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/2022/Mar/18/t16475664423rtkmohfkcaf4qs.htm/, Retrieved Tue, 25 Aug 2026 19:59:49 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=319658, Retrieved Tue, 25 Aug 2026 19:59:49 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact375

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [] [2022-03-18 01:18:23] [d41d8cd98f00b204e9800998ecf8427e] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
1 0 0 0 1 1 0 1 0 0 0
1 1 1 0 1 1 0 1 1 1 1
0 1 0 0 0 0 0 1 1 0 0
1 1 0 1 0 0 1 0 1 0 0
0 0 1 1 0 1 0 0 0 0 0
1 1 1 0 1 0 1 0 0 1 1
1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1
1 0 0 1 0 0 1 0 1 1 0
1 0 1 0 1 0 0 0 0 0 1
1 1 1 0 0 1 0 0 0 1 1
1 1 0 1 0 1 1 0 0 0 0
0 1 0 1 0 0 0 0 0 0 0
1 1 0 1 1 0 0 1 1 0 1
1 1 0 0 0 0 0 0 0 1 0
1 1 0 0 1 1 0 1 0 1 0
0 1 0 1 1 0 0 0 1 1 1
1 1 0 1 1 1 1 0 0 0 0
1 1 0 0 0 0 0 0 1 1 0
0 0 1 0 1 0 0 1 1 0 0
1 1 1 1 0 0 1 0 1 0 1
1 1 1 0 0 0 0 1 1 1 0
1 1 1 1 1 1 1 0 1 0 1
0 0 0 0 0 1 0 0 1 0 0
1 1 1 1 1 1 1 0 1 1 1
1 1 1 0 0 0 0 1 0 0 1
1 0 1 0 0 1 1 0 0 0 0
1 1 0 0 0 1 0 0 1 0 0
0 0 0 0 1 1 0 1 0 0 0
0 1 0 0 0 1 0 0 1 0 1
1 1 1 1 1 0 1 1 0 0 1
1 0 1 0 0 1 0 1 1 1 0
1 1 1 1 1 0 0 0 1 1 1
1 1 1 1 1 1 1 1 1 1 1
1 0 1 1 0 0 0 0 1 1 0
1 1 0 1 1 0 0 0 1 0 1
0 0 1 0 0 0 1 0 1 1 0
1 1 1 1 1 1 0 1 0 1 1
1 1 0 1 1 0 1 1 1 1 0
1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 0 1 1 0 1 1 1
1 1 1 0 0 0 1 1 0 0 0
1 0 0 0 0 1 0 0 0 1 1
1 1 1 1 1 0 0 0 0 0 1
1 0 1 0 1 1 1 0 0 0 0
1 0 1 0 0 0 0 1 1 1 1

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
Warning: there are blank lines in the 'Data X' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.

\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 & 
Warning: there are blank lines in the 'Data X' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.
 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=319658&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]
Warning: there are blank lines in the 'Data X' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.
[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=319658&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319658&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
Warning: there are blank lines in the 'Data X' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.62880.63290.70610.1355
Q1 excluded0.59170.59160.66960.1265
Q2 excluded0.60010.60370.66920.1322
Q3 excluded0.60110.6060.66360.1333
Q4 excluded0.59020.59530.66280.1282
Q5 excluded0.58570.59180.66010.1266
Q6 excluded0.6540.65680.72280.1606
Q7 excluded0.60110.60480.66740.1327
Q8 excluded0.63360.63760.69560.1496
Q9 excluded0.63360.63880.69790.1503
Q10 excluded0.60350.60740.68150.134
Q11 excluded0.56150.56780.62660.1161

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6288 & 0.6329 & 0.7061 & 0.1355 \tabularnewline
Q1 excluded & 0.5917 & 0.5916 & 0.6696 & 0.1265 \tabularnewline
Q2 excluded & 0.6001 & 0.6037 & 0.6692 & 0.1322 \tabularnewline
Q3 excluded & 0.6011 & 0.606 & 0.6636 & 0.1333 \tabularnewline
Q4 excluded & 0.5902 & 0.5953 & 0.6628 & 0.1282 \tabularnewline
Q5 excluded & 0.5857 & 0.5918 & 0.6601 & 0.1266 \tabularnewline
Q6 excluded & 0.654 & 0.6568 & 0.7228 & 0.1606 \tabularnewline
Q7 excluded & 0.6011 & 0.6048 & 0.6674 & 0.1327 \tabularnewline
Q8 excluded & 0.6336 & 0.6376 & 0.6956 & 0.1496 \tabularnewline
Q9 excluded & 0.6336 & 0.6388 & 0.6979 & 0.1503 \tabularnewline
Q10 excluded & 0.6035 & 0.6074 & 0.6815 & 0.134 \tabularnewline
Q11 excluded & 0.5615 & 0.5678 & 0.6266 & 0.1161 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=319658&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]0.6288[/C][C]0.6329[/C][C]0.7061[/C][C]0.1355[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.5917[/C][C]0.5916[/C][C]0.6696[/C][C]0.1265[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.6001[/C][C]0.6037[/C][C]0.6692[/C][C]0.1322[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.6011[/C][C]0.606[/C][C]0.6636[/C][C]0.1333[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.5902[/C][C]0.5953[/C][C]0.6628[/C][C]0.1282[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.5857[/C][C]0.5918[/C][C]0.6601[/C][C]0.1266[/C][/ROW]
[ROW][C]Q6 excluded[/C][C]0.654[/C][C]0.6568[/C][C]0.7228[/C][C]0.1606[/C][/ROW]
[ROW][C]Q7 excluded[/C][C]0.6011[/C][C]0.6048[/C][C]0.6674[/C][C]0.1327[/C][/ROW]
[ROW][C]Q8 excluded[/C][C]0.6336[/C][C]0.6376[/C][C]0.6956[/C][C]0.1496[/C][/ROW]
[ROW][C]Q9 excluded[/C][C]0.6336[/C][C]0.6388[/C][C]0.6979[/C][C]0.1503[/C][/ROW]
[ROW][C]Q10 excluded[/C][C]0.6035[/C][C]0.6074[/C][C]0.6815[/C][C]0.134[/C][/ROW]
[ROW][C]Q11 excluded[/C][C]0.5615[/C][C]0.5678[/C][C]0.6266[/C][C]0.1161[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=319658&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319658&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 itmes0.62880.63290.70610.1355
Q1 excluded0.59170.59160.66960.1265
Q2 excluded0.60010.60370.66920.1322
Q3 excluded0.60110.6060.66360.1333
Q4 excluded0.59020.59530.66280.1282
Q5 excluded0.58570.59180.66010.1266
Q6 excluded0.6540.65680.72280.1606
Q7 excluded0.60110.60480.66740.1327
Q8 excluded0.63360.63760.69560.1496
Q9 excluded0.63360.63880.69790.1503
Q10 excluded0.60350.60740.68150.134
Q11 excluded0.56150.56780.62660.1161


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):
par1 <- 'TRUE'
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')