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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 computationTue, 16 Dec 2014 17:04:55 +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/16/t1418749512re28bmhbudkuy8m.htm/, Retrieved Wed, 11 Feb 2026 21:09:22 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=269845, Retrieved Wed, 11 Feb 2026 21:09:22 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact262

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [A: Amotivation] [2014-12-16 17:04:55] [f02c6c9412fee5ce04bac553459224aa] [Current]
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Dataset

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

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 Maurice George Kendall' @ kendall.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 Maurice George Kendall' @ kendall.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269845&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 Maurice George Kendall' @ kendall.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269845&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269845&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 Maurice George Kendall' @ kendall.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.84710.86080.82790.6072
AMS5 excluded0.78520.81050.74920.5878
AMS12 excluded0.84620.84860.79020.6513
AMS19 excluded0.80490.82090.75670.6045
AMS26 excluded0.79420.80890.74240.5852

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8471 & 0.8608 & 0.8279 & 0.6072 \tabularnewline
AMS5 excluded & 0.7852 & 0.8105 & 0.7492 & 0.5878 \tabularnewline
AMS12 excluded & 0.8462 & 0.8486 & 0.7902 & 0.6513 \tabularnewline
AMS19 excluded & 0.8049 & 0.8209 & 0.7567 & 0.6045 \tabularnewline
AMS26 excluded & 0.7942 & 0.8089 & 0.7424 & 0.5852 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269845&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]0.8471[/C][C]0.8608[/C][C]0.8279[/C][C]0.6072[/C][/ROW]
[ROW][C]AMS5 excluded[/C][C]0.7852[/C][C]0.8105[/C][C]0.7492[/C][C]0.5878[/C][/ROW]
[ROW][C]AMS12 excluded[/C][C]0.8462[/C][C]0.8486[/C][C]0.7902[/C][C]0.6513[/C][/ROW]
[ROW][C]AMS19 excluded[/C][C]0.8049[/C][C]0.8209[/C][C]0.7567[/C][C]0.6045[/C][/ROW]
[ROW][C]AMS26 excluded[/C][C]0.7942[/C][C]0.8089[/C][C]0.7424[/C][C]0.5852[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269845&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269845&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 itmes0.84710.86080.82790.6072
AMS5 excluded0.78520.81050.74920.5878
AMS12 excluded0.84620.84860.79020.6513
AMS19 excluded0.80490.82090.75670.6045
AMS26 excluded0.79420.80890.74240.5852


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 1 2 3 4 5 ;
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')