FreeStatistics.org

Free Statistics

of Irreproducible Research!

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, 13 Dec 2014 16:33:49 +0000
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2014/Dec/13/t1418488433jhey95v50rc0hra.htm/, Retrieved Tue, 10 Feb 2026 07:57:26 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=267220, Retrieved Tue, 10 Feb 2026 07:57:26 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact309

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Cronbach Alpha] [Intrinsic Motivat...] [2010-10-12 11:40:37] [b98453cac15ba1066b407e146608df68]
- RMPD    [Cronbach Alpha] [] [2014-12-13 16:33:49] [d043def4c969c6fe6dac6c6c71a7875a] [Current]
Feedback Forum

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
3 4 5 4
4 6 3 3
7 7 6 5
3 2 3 4
5 5 5 5
4 6 5 4
5 5 6 6
1 4 2 5
4 3 5 5
4 5 4 5
6 7 6 5
3 6 6 3
4 5 4 5
6 5 6 6
4 6 6 5
5 6 5 5
7 7 7 7
4 5 4 4
4 5 6 6
4 5 4 5
4 5 5 3
4 5 5 4
5 4 2 3
5 5 5 5
2 3 5 4
4 6 2 5
6 6 5 4
6 6 6 5
6 6 6 6
4 6 6 5
3 4 4 3
6 6 6 6
3 3 5 5
6 6 4 5
1 4 2 1
5 3 5 4
4 4 5 4
4 2 5 5
5 5 6 6
5 6 5 5
5 5 4 6
2 1 1 4
2 4 2 3
2 3 4 6
3 4 3 3
3 5 5 5
5 5 5 4
5 7 5 5
3 2 3 3
3 3 4 4
5 6 5 5
5 5 6 5
4 4 5 5
5 5 5 6
5 6 6 6
5 5 5 5
3 6 6 6
2 6 5 5
4 6 5 4
5 6 3 4
3 6 6 3
6 6 3 4
3 5 5 5
2 3 5 1
6 4 4 6
4 5 5 6
3 6 7 5
2 4 2 4
3 5 3 4
3 4 6 5
4 3 3 4
4 5 4 5
2 5 4 5
6 5 5 3
2 3 1 1
6 1 7 7
6 6 6 6
5 5 6 5
5 5 5 5
3 7 5 7
4 5 4 4
4 5 6 4
5 5 5 5
5 5 5 5
3 5 4 4
4 5 4 4
2 2 1 1
3 5 7 7
5 5 5 5
5 4 4 4
6 6 4 4
5 6 5 7
5 4 4 5
5 3 2 3
6 6 5 5
5 5 5 5
5 5 5 5
2 4 3 4
4 7 4 1
4 5 3 4
2 4 5 4
5 5 4 5
6 5 4 4
6 6 6 6
2 2 2 3
5 6 5 6
3 4 4 4
4 6 6 6
5 5 6 6
6 6 5 7
2 6 7 6
6 6 6 7
7 7 6 6
5 6 5 3
5 5 6 5
3 4 3 4
7 7 7 7
4 4 4 4
5 5 6 5
5 5 3 3
4 3 4 5
6 7 6 6
4 6 5 6
6 5 6 5
3 3 1 2
7 7 3 7
4 6 6 6
2 2 5 1
5 6 6 5
5 5 6 5
5 5 5 5
3 4 5 5
1 2 2 2
4 4 2 4
5 6 6 6
3 5 6 4
4 5 6 2
5 4 6 5
3 5 6 5
5 3 5 6
6 6 6 5
4 4 6 6
4 5 5 5
3 4 5 4
4 2 3 2
6 5 5 5
5 5 4 6
4 5 5 6
4 4 5 6
5 5 4 5
4 5 6 5
5 6 6 5
4 6 4 5
6 6 6 5
4 3 3 6
3 5 5 5
5 6 6 6
5 5 5 5
6 7 5 5
2 7 2 2
7 7 7 5
5 5 6 3
4 3 3 3
2 3 2 3
5 6 4 6
7 6 6 5
6 5 4 6
6 6 6 5
4 5 4 3
6 7 7 6
3 5 4 4

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'Sir Ronald Aylmer Fisher' @ fisher.wessa.net

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input & view raw input (R code)  \tabularnewline
Raw Output & view raw output of R engine  \tabularnewline
Computing time & 1 seconds \tabularnewline
R Server & 'Sir Ronald Aylmer Fisher' @ fisher.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=267220&T=0

[TABLE]
[ROW][C]Summary of computational transaction[/C][/ROW]
[ROW][C]Raw Input[/C][C]view raw input (R code) [/C][/ROW]
[ROW][C]Raw Output[/C][C]view raw output of R engine [/C][/ROW]
[ROW][C]Computing time[/C][C]1 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Sir Ronald Aylmer Fisher' @ fisher.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=267220&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=267220&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 Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'Sir Ronald Aylmer Fisher' @ fisher.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.78920.78910.74540.4833
AMS6 excluded0.73410.73330.65520.4782
AMS13 excluded0.74980.75040.67040.5006
AMS20 excluded0.72620.72560.64340.4685
AMS27 excluded0.73840.73920.65520.4858

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7892 & 0.7891 & 0.7454 & 0.4833 \tabularnewline
AMS6 excluded & 0.7341 & 0.7333 & 0.6552 & 0.4782 \tabularnewline
AMS13 excluded & 0.7498 & 0.7504 & 0.6704 & 0.5006 \tabularnewline
AMS20 excluded & 0.7262 & 0.7256 & 0.6434 & 0.4685 \tabularnewline
AMS27 excluded & 0.7384 & 0.7392 & 0.6552 & 0.4858 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=267220&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]0.7892[/C][C]0.7891[/C][C]0.7454[/C][C]0.4833[/C][/ROW]
[ROW][C]AMS6 excluded[/C][C]0.7341[/C][C]0.7333[/C][C]0.6552[/C][C]0.4782[/C][/ROW]
[ROW][C]AMS13 excluded[/C][C]0.7498[/C][C]0.7504[/C][C]0.6704[/C][C]0.5006[/C][/ROW]
[ROW][C]AMS20 excluded[/C][C]0.7262[/C][C]0.7256[/C][C]0.6434[/C][C]0.4685[/C][/ROW]
[ROW][C]AMS27 excluded[/C][C]0.7384[/C][C]0.7392[/C][C]0.6552[/C][C]0.4858[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=267220&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=267220&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 itmes0.78920.78910.74540.4833
AMS6 excluded0.73410.73330.65520.4782
AMS13 excluded0.74980.75040.67040.5006
AMS20 excluded0.72620.72560.64340.4685
AMS27 excluded0.73840.73920.65520.4858


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')