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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, 09 Dec 2014 22:15:28 +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/09/t1418163600jnc2knqmobm8128.htm/, Retrieved Sun, 19 May 2024 12:01:50 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=264858, Retrieved Sun, 19 May 2024 12:01:50 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact107

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 11:46:14] [b98453cac15ba1066b407e146608df68]
- RMPD    [Cronbach Alpha] [] [2014-12-09 22:15:28] [6993448de96b8662e47595bfdf466bf3] [Current]
-    D      [Cronbach Alpha] [] [2014-12-10 09:30:49] [6b382800c0d3804662889dbce999b8c7]
- RMPD      [Notched Boxplots] [] [2014-12-10 09:38:26] [6b382800c0d3804662889dbce999b8c7]
- R  D        [Notched Boxplots] [] [2014-12-10 09:44:14] [6b382800c0d3804662889dbce999b8c7]
-    D          [Notched Boxplots] [] [2014-12-10 10:17:28] [6b382800c0d3804662889dbce999b8c7]
-    D            [Notched Boxplots] [] [2014-12-10 13:21:00] [6b382800c0d3804662889dbce999b8c7]
- RMPD          [Multiple Regression] [] [2014-12-10 11:16:33] [6b382800c0d3804662889dbce999b8c7]
- RMPD          [Histogram] [] [2014-12-10 11:26:01] [6b382800c0d3804662889dbce999b8c7]
- RMPD          [Multiple Regression] [] [2014-12-10 11:43:18] [6b382800c0d3804662889dbce999b8c7]
- R           [Notched Boxplots] [] [2014-12-10 13:05:13] [6b382800c0d3804662889dbce999b8c7]
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Dataset

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

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'Gertrude Mary Cox' @ cox.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 & 'Gertrude Mary Cox' @ cox.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=264858&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]'Gertrude Mary Cox' @ cox.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=264858&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264858&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'Gertrude Mary Cox' @ cox.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.65410.65620.65350.323
Q4 excluded0.51320.50560.44160.2542
Q11 excluded0.56190.55920.48220.2972
Q18 excluded0.53730.54570.5470.2859
Q25 excluded0.70610.71430.65660.4545

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.6541 & 0.6562 & 0.6535 & 0.323 \tabularnewline
Q4 excluded & 0.5132 & 0.5056 & 0.4416 & 0.2542 \tabularnewline
Q11 excluded & 0.5619 & 0.5592 & 0.4822 & 0.2972 \tabularnewline
Q18 excluded & 0.5373 & 0.5457 & 0.547 & 0.2859 \tabularnewline
Q25 excluded & 0.7061 & 0.7143 & 0.6566 & 0.4545 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=264858&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]0.6541[/C][C]0.6562[/C][C]0.6535[/C][C]0.323[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.5132[/C][C]0.5056[/C][C]0.4416[/C][C]0.2542[/C][/ROW]
[ROW][C]Q11 excluded[/C][C]0.5619[/C][C]0.5592[/C][C]0.4822[/C][C]0.2972[/C][/ROW]
[ROW][C]Q18 excluded[/C][C]0.5373[/C][C]0.5457[/C][C]0.547[/C][C]0.2859[/C][/ROW]
[ROW][C]Q25 excluded[/C][C]0.7061[/C][C]0.7143[/C][C]0.6566[/C][C]0.4545[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=264858&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264858&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 itmes0.65410.65620.65350.323
Q4 excluded0.51320.50560.44160.2542
Q11 excluded0.56190.55920.48220.2972
Q18 excluded0.53730.54570.5470.2859
Q25 excluded0.70610.71430.65660.4545


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)
z <- t(y)
(r <- alpha(z))
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')