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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 computationWed, 07 Dec 2016 14:56:55 +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/07/t1481119061jire0g77srob4bu.htm/, Retrieved Mon, 03 Nov 2025 12:17:21 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=298118, Retrieved Mon, 03 Nov 2025 12:17:21 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact229

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [Cronbach alpha] [2016-12-07 13:56:55] [36884fbde1107444791dd71ee0072a5a] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
3	4	3
5	5	5
5	4	4
5	4	4
4	4	3
5	5	5
5	4	3
5	5	5
5	5	4
5	4	3
5	5	5
NA	4	5
5	5	5
5	5	4
4	4	3
3	4	4
5	5	5
NA	NA	NA
5	4	3
5	3	3
4	4	4
2	5	1
5	5	4
5	5	4
5	5	4
4	4	4
4	5	5
4	5	4
5	5	4
5	5	4
4	NA	4
5	5	4
5	5	5
1	1	1
5	5	4
4	5	4
4	4	4
4	4	4
5	5	4
4	4	5
4	4	4
5	4	4
3	3	4
5	5	5
5	5	5
2	2	1
3	3	3
4	4	3
4	5	3
NA	NA	NA
5	5	4
5	5	5
4	4	4
5	5	3
5	5	5
4	4	4
5	5	4
4	5	3
4	4	4
3	4	3
4	4	3
4	5	4
5	4	4
4	5	4
4	5	4
4	4	4
4	3	3
4	4	4
2	4	4
4	5	4
4	4	3
5	5	5
3	3	3
3	4	3
5	4	5
4	3	3
5	5	5
4	5	4
4	3	3
5	5	3
5	5	5
5	4	3
4	4	3
5	4	4
5	5	5
2	5	4
5	4	5
5	5	4
5	5	5
5	4	4
4	4	4
4	4	4
5	5	5
4	4	4
5	5	5
5	5	4
5	4	5
4	4	4
5	5	5
5	5	5
3	4	2
5	4	5
5	5	5
5	5	5
4	3	NA
4	4	5
4	4	4
4	4	4
5	5	5
5	5	4
4	4	2
3	4	4
3	4	3
4	4	5
4	4	3
5	5	4
5	4	4
4	4	5
5	5	5
5	4	4
4	4	3
4	4	3
5	5	4
5	5	5
5	5	3
5	5	3
4	5	4
5	4	4
3	4	4
5	5	4
5	4	5
4	5	4
5	5	5
4	4	4
4	4	4
4	4	4
4	4	5
2	3	2
4	4	4
5	4	5
5	5	5
5	5	5
4	4	4
4	5	4
5	4	4
5	4	4
5	4	5
5	5	5
5	3	5
5	4	5
4	4	4
5	4	4
3	3	3
3	4	4
4	5	4
4	5	4
3	5	3
3	4	3
5	5	5
5	5	4
5	4	4
5	4	4
5	5	5
5	4	5
5	5	5
5	4	5
4	4	4
4	4	5
2	4	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=298118&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=298118&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=298118&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 itmes0.75560.75830.68040.5112
ITH1 excluded0.61540.62670.45640.4564
ITH2 excluded0.72170.72190.56490.5649
ITH3 excluded0.66890.67750.51230.5123

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7556 & 0.7583 & 0.6804 & 0.5112 \tabularnewline
ITH1 excluded & 0.6154 & 0.6267 & 0.4564 & 0.4564 \tabularnewline
ITH2 excluded & 0.7217 & 0.7219 & 0.5649 & 0.5649 \tabularnewline
ITH3 excluded & 0.6689 & 0.6775 & 0.5123 & 0.5123 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=298118&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]0.7556[/C][C]0.7583[/C][C]0.6804[/C][C]0.5112[/C][/ROW]
[ROW][C]ITH1 excluded[/C][C]0.6154[/C][C]0.6267[/C][C]0.4564[/C][C]0.4564[/C][/ROW]
[ROW][C]ITH2 excluded[/C][C]0.7217[/C][C]0.7219[/C][C]0.5649[/C][C]0.5649[/C][/ROW]
[ROW][C]ITH3 excluded[/C][C]0.6689[/C][C]0.6775[/C][C]0.5123[/C][C]0.5123[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=298118&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=298118&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 itmes0.75560.75830.68040.5112
ITH1 excluded0.61540.62670.45640.4564
ITH2 excluded0.72170.72190.56490.5649
ITH3 excluded0.66890.67750.51230.5123


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')