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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, 23 Oct 2013 07:45:41 -0400
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2013/Oct/23/t1382528749rqy3odv9idv5b07.htm/, Retrieved Sat, 27 Apr 2024 19:29:05 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=218817, Retrieved Sat, 27 Apr 2024 19:29:05 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact106

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Cronbach Alpha] [] [2013-10-23 11:43:18] [a5062392f41e88f97a2275cae88db61b]
-    D    [Cronbach Alpha] [] [2013-10-23 11:45:41] [8707ec56d577a36c6e8f91524bd637f5] [Current]
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Dataset

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

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=218817&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=218817&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=218817&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 itmes0.84250.84590.81150.5785
Q1_2 excluded0.81360.81730.75540.5986
Q1_9 excluded0.81270.81740.75530.5988
Q1_16 excluded0.7880.79090.71790.5577
Q1_23 excluded0.78920.79160.71870.5587

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8425 & 0.8459 & 0.8115 & 0.5785 \tabularnewline
Q1_2 excluded & 0.8136 & 0.8173 & 0.7554 & 0.5986 \tabularnewline
Q1_9 excluded & 0.8127 & 0.8174 & 0.7553 & 0.5988 \tabularnewline
Q1_16 excluded & 0.788 & 0.7909 & 0.7179 & 0.5577 \tabularnewline
Q1_23 excluded & 0.7892 & 0.7916 & 0.7187 & 0.5587 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=218817&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]0.8425[/C][C]0.8459[/C][C]0.8115[/C][C]0.5785[/C][/ROW]
[ROW][C]Q1_2 excluded[/C][C]0.8136[/C][C]0.8173[/C][C]0.7554[/C][C]0.5986[/C][/ROW]
[ROW][C]Q1_9 excluded[/C][C]0.8127[/C][C]0.8174[/C][C]0.7553[/C][C]0.5988[/C][/ROW]
[ROW][C]Q1_16 excluded[/C][C]0.788[/C][C]0.7909[/C][C]0.7179[/C][C]0.5577[/C][/ROW]
[ROW][C]Q1_23 excluded[/C][C]0.7892[/C][C]0.7916[/C][C]0.7187[/C][C]0.5587[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=218817&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=218817&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 itmes0.84250.84590.81150.5785
Q1_2 excluded0.81360.81730.75540.5986
Q1_9 excluded0.81270.81740.75530.5988
Q1_16 excluded0.7880.79090.71790.5577
Q1_23 excluded0.78920.79160.71870.5587


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
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')