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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 13:11:48 +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/t1418735544wydem8zvkd7nywt.htm/, Retrieved Thu, 16 May 2024 18:53:39 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=269489, Retrieved Thu, 16 May 2024 18:53:39 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact84

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [Personal Standards 2] [2014-12-16 13:11:48] [ecc8a223a6799628ce1dc096d32923a0] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
2 4 4 2 4 4 4
3 2 4 2 2 4 2
3 3 3 2 2 3 3
3 4 2 4 3 4 4
4 2 4 2 3 3 3
3 2 3 3 3 4 3
2 3 4 2 2 3 3
4 4 4 4 4 4 4
2 3 3 3 3 3 3
1 2 4 4 3 4 4
4 5 5 2 4 4 4
2 2 4 2 2 4 2
4 3 4 4 3 4 4
2 3 2 2 4 2 2
2 4 3 3 4 4 3
4 5 5 2 4 4 4
3 4 3 4 4 4 4
4 3 4 1 3 4 2
3 3 4 3 3 3 3
4 3 3 3 2 3 3
4 5 4 4 4 2 5
2 5 5 4 4 4 3
3 3 3 2 3 3 3
4 5 4 4 4 5 4
4 4 3 4 4 5 4
1 4 4 3 4 4 4
2 3 3 2 4 4 2
4 4 4 2 3 2 4
2 3 4 3 2 2 3
2 2 4 1 2 1 1
3 2 3 2 2 3 2
5 2 5 5 5 5 4
2 3 4 2 2 2 3
5 5 3 2 2 4 4
5 4 3 4 2 3 4
2 2 2 4 2 1 2
4 4 4 3 4 2 3
4 3 3 4 2 4 2
3 3 4 3 3 3 4
3 3 3 4 4 5 4
2 2 4 1 2 1 2
2 4 4 2 2 2 2
4 5 5 4 4 5 5
1 2 4 1 2 1 1
4 3 3 2 3 4 2
3 3 4 3 3 3 3
2 4 4 3 2 3 3
2 3 3 2 2 4 4
5 5 4 5 5 5 4
4 4 4 3 2 4 4
4 5 4 2 3 4 3
3 2 3 4 2 3 2
1 2 3 1 1 3 2
3 4 4 3 4 3 3
1 5 5 4 5 5 5
4 2 2 4 2 4 4
2 3 4 3 4 4 3
2 4 4 1 2 2 4
2 3 4 2 2 4 4
4 3 3 2 3 4 2
2 4 4 3 2 3 4
2 4 3 3 2 2 4
5 3 4 5 4 3 4
2 3 4 1 2 3 3
3 3 3 4 4 2 4
2 3 2 1 2 3 2
2 3 4 4 4 2 3
3 4 4 3 4 4 4
4 3 3 1 2 2 4
4 1 3 1 1 1 1
2 5 4 3 2 4 4
2 3 4 4 4 4 3
2 4 4 2 2 4 4
4 4 2 2 2 2 4
3 4 4 1 4 1 2
2 4 4 2 3 4 4
3 3 2 3 3 2 4
4 4 4 5 4 4 4
3 3 4 2 3 4 4
3 4 3 2 2 3 2
2 4 4 1 2 4 2
4 4 4 3 3 3 4
3 2 3 2 3 2 2
2 3 5 4 3 4 3
3 3 2 3 3 4 3
3 3 4 3 3 2 4
3 3 4 2 3 3 3
2 2 4 2 1 4 4
4 5 3 5 5 4 3
2 1 3 2 1 4 2
4 4 4 4 2 3 3
3 2 3 2 2 3 3
4 4 2 4 4 4 4
3 4 4 2 2 4 3
3 2 4 2 2 3 2
2 3 4 2 3 4 2
2 2 3 2 2 2 2
4 3 4 2 2 3 3
3 4 3 3 3 3 3
3 2 4 2 3 3 3
3 4 4 4 4 4 3
3 4 4 3 2 3 3
2 2 2 2 2 2 2
3 3 4 2 1 2 4
4 4 2 2 4 4 4
3 3 4 4 2 4 3
4 4 3 3 3 2 4
3 3 3 3 4 3 4
2 2 4 1 2 2 2
3 4 4 4 3 4 4
3 2 4 2 4 5 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'George Udny Yule' @ yule.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 & 'George Udny Yule' @ yule.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269489&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]'George Udny Yule' @ yule.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269489&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269489&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'George Udny Yule' @ yule.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.75610.74920.75090.2991
PERF4 excluded0.75940.75320.74650.3372
PERF12 excluded0.70910.69770.69030.2778
PERF16 excluded0.77420.77540.76150.3653
PERF18 excluded0.70610.70010.68980.2801
PERF19 excluded0.69970.69190.68720.2724
PERF24 excluded0.72390.71440.7170.2942
PERF30 excluded0.69730.6860.67910.2669

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7561 & 0.7492 & 0.7509 & 0.2991 \tabularnewline
PERF4 excluded & 0.7594 & 0.7532 & 0.7465 & 0.3372 \tabularnewline
PERF12 excluded & 0.7091 & 0.6977 & 0.6903 & 0.2778 \tabularnewline
PERF16 excluded & 0.7742 & 0.7754 & 0.7615 & 0.3653 \tabularnewline
PERF18 excluded & 0.7061 & 0.7001 & 0.6898 & 0.2801 \tabularnewline
PERF19 excluded & 0.6997 & 0.6919 & 0.6872 & 0.2724 \tabularnewline
PERF24 excluded & 0.7239 & 0.7144 & 0.717 & 0.2942 \tabularnewline
PERF30 excluded & 0.6973 & 0.686 & 0.6791 & 0.2669 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269489&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]0.7561[/C][C]0.7492[/C][C]0.7509[/C][C]0.2991[/C][/ROW]
[ROW][C]PERF4 excluded[/C][C]0.7594[/C][C]0.7532[/C][C]0.7465[/C][C]0.3372[/C][/ROW]
[ROW][C]PERF12 excluded[/C][C]0.7091[/C][C]0.6977[/C][C]0.6903[/C][C]0.2778[/C][/ROW]
[ROW][C]PERF16 excluded[/C][C]0.7742[/C][C]0.7754[/C][C]0.7615[/C][C]0.3653[/C][/ROW]
[ROW][C]PERF18 excluded[/C][C]0.7061[/C][C]0.7001[/C][C]0.6898[/C][C]0.2801[/C][/ROW]
[ROW][C]PERF19 excluded[/C][C]0.6997[/C][C]0.6919[/C][C]0.6872[/C][C]0.2724[/C][/ROW]
[ROW][C]PERF24 excluded[/C][C]0.7239[/C][C]0.7144[/C][C]0.717[/C][C]0.2942[/C][/ROW]
[ROW][C]PERF30 excluded[/C][C]0.6973[/C][C]0.686[/C][C]0.6791[/C][C]0.2669[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269489&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269489&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 itmes0.75610.74920.75090.2991
PERF4 excluded0.75940.75320.74650.3372
PERF12 excluded0.70910.69770.69030.2778
PERF16 excluded0.77420.77540.76150.3653
PERF18 excluded0.70610.70010.68980.2801
PERF19 excluded0.69970.69190.68720.2724
PERF24 excluded0.72390.71440.7170.2942
PERF30 excluded0.69730.6860.67910.2669


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')