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 computationTue, 09 Dec 2014 10:15:21 +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/t141812013210bp2x1l7eri5qy.htm/, Retrieved Thu, 16 May 2024 06:11:34 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=264401, Retrieved Thu, 16 May 2024 06:11:34 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact90

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] [I3 Cronbach Alpha] [2014-12-09 10:15:21] [0eaac0c325f91461a250342d6072f4e0] [Current]
Feedback Forum

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
2	2	1	2
4	5	5	4
5	5	5	5
1	2	3	3
5	4	5	5
3	3	3	3
4	4	4	4
5	4	5	3
3	2	2	2
7	7	7	7
6	6	6	2
5	3	5	3
4	6	6	6
3	5	4	5
3	3	3	3
2	5	5	6
5	5	5	5
3	3	3	3
4	4	4	4
3	4	4	5
7	4	4	6
6	3	3	3
5	4	4	4
4	5	4	4
4	3	4	6
5	4	4	5
4	4	3	4
6	6	3	5
5	3	2	3
6	5	5	5
4	2	4	2
1	3	1	1
4	4	2	3
5	5	4	5
4	1	1	6
4	4	3	3
2	3	5	3
2	4	3	3
4	4	4	5
4	5	5	5
2	3	2	3
2	3	2	3
2	3	3	3
2	3	3	3
2	4	2	2
2	2	1	2
4	6	6	6
4	2	2	4
5	4	5	4
4	5	5	6
2	2	3	2
3	4	4	5
3	4	4	3
4	2	2	3
5	5	5	5
3	4	4	6
2	4	4	4
2	2	2	2
4	4	4	4
3	3	2	3
3	2	3	2
2	4	3	6
2	5	3	5
5	2	2	1
4	2	2	2
4	4	5	5
3	3	2	2
6	5	5	6
5	2	5	4
2	2	1	5
4	1	1	1
5	4	3	4
3	4	4	5
4	4	3	5
5	6	5	6
2	1	1	1
5	5	5	3
2	3	2	3
2	1	2	3
3	4	4	5
2	2	2	2
6	3	3	4
4	3	3	4
4	3	4	4
1	3	3	2
5	5	6	5
2	1	2	2
4	4	4	5
3	5	5	5
4	4	3	5
3	4	4	5
4	3	3	4
5	3	3	4
2	2	2	2
3	6	6	7
2	1	1	1
7	2	2	2
6	5	5	6
4	5	5	4
3	4	3	5
2	3	3	3
4	5	4	6
5	4	5	5
5	5	5	6
1	1	1	1
3	5	5	4
2	2	2	4
4	2	3	4
4	7	2	2
6	2	1	2
6	6	4	4
3	4	4	2
5	4	4	5
5	5	6	4
4	3	4	4
1	1	1	1
3	2	2	2
4	4	4	6
3	4	2	3
6	2	3	6
4	3	3	2
6	4	3	3
4	5	4	4
4	3	3	4
4	3	3	3
5	5	5	5
4	4	4	4
5	3	3	4
2	3	2	3
4	4	4	4
5	5	6	5
3	4	4	4
6	2	4	4
5	4	5	5
2	4	1	2
5	4	5	5
2	2	1	2
7	5	5	6
3	3	4	4
4	2	2	2
4	4	4	4
4	2	2	4
3	2	2	3
3	2	1	1
4	6	5	5
3	2	2	2
3	5	2	4
5	2	2	3
4	2	2	2
3	5	4	7
4	4	4	4
1	2	3	5
5	3	2	5
3	4	4	3
3	3	3	2
2	5	3	4
4	4	3	4
1	2	2	2
5	6	5	6
5	6	4	4
7	4	4	7
2	5	2	2
4	5	5	5
2	2	2	3
2	3	3	3
5	5	3	4
3	2	2	5
5	4	4	4
3	2	2	3
6	5	3	3
4	2	3	4
4	2	2	3
4	6	6	3
3	6	6	6
7	6	5	6
4	3	3	3
4	4	4	4
3	3	3	4
3	4	4	4
5	3	3	4
2	3	2	4
1	2	1	3
3	4	3	3
5	3	2	3
3	3	2	4
2	3	2	1
1	2	2	2
4	4	4	5
4	1	2	2
5	4	4	5
5	4	4	4
5	4	4	4
5	4	4	5
3	4	3	2
3	4	4	3
3	6	6	7
3	6	5	5
6	4	6	5
3	3	2	2
4	4	4	4
5	2	2	2
4	4	3	4
2	3	3	4
5	5	5	6
6	7	6	3
5	5	5	5
5	4	3	3
3	2	2	2
5	4	3	3
5	3	4	2
3	2	2	4
1	2	2	4
6	4	3	5
4	3	2	3
4	2	1	4
3	4	3	4
3	3	1	3
5	5	4	4
4	2	1	4
2	3	4	5
2	4	4	6
2	3	2	4
4	2	1	1
2	5	4	5
2	4	3	4
3	3	3	3
4	4	5	4
5	6	6	6
4	2	3	5
3	2	2	3
4	4	4	4
3	2	2	4
4	4	4	4
5	5	4	5
4	4	4	5
3	3	3	3
5	3	3	6
4	4	2	1
4	5	5	5
4	3	2	3
2	2	2	2
5	4	3	5
5	4	2	2
6	4	2	5
4	1	1	1
6	6	5	6
6	4	4	4
4	3	2	4
5	3	4	5
3	3	3	4
3	3	2	5
2	2	3	1
4	4	3	5
5	3	3	3
3	2	6	2
5	5	5	4
3	4	3	5
5	3	3	4
1	2	2	3
5	3	2	4
3	1	2	1
2	2	4	3
5	3	4	5
4	5	4	6
6	4	3	4
3	2	2	5
3	3	3	3
4	5	4	5
4	4	4	4
6	3	3	3
5	5	5	5
5	4	3	4
3	4	3	2
4	3	1	2
7	7	7	7
4	4	5	6
5	4	4	5
4	5	5	5
2	1	1	4
3	4	5	5
5	4	3	4
5	4	4	5
3	4	2	3
4	4	4	5
2	5	4	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'Gwilym Jenkins' @ jenkins.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 & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=264401&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]'Gwilym Jenkins' @ jenkins.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=264401&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264401&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'Gwilym Jenkins' @ jenkins.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.81290.81420.78770.5228
Q4 excluded0.84190.84340.79270.6422
Q11 excluded0.72890.72920.66090.473
Q18 excluded0.71120.71220.63550.452
Q25 excluded0.76610.76770.7270.5241

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8129 & 0.8142 & 0.7877 & 0.5228 \tabularnewline
Q4 excluded & 0.8419 & 0.8434 & 0.7927 & 0.6422 \tabularnewline
Q11 excluded & 0.7289 & 0.7292 & 0.6609 & 0.473 \tabularnewline
Q18 excluded & 0.7112 & 0.7122 & 0.6355 & 0.452 \tabularnewline
Q25 excluded & 0.7661 & 0.7677 & 0.727 & 0.5241 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=264401&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]0.8129[/C][C]0.8142[/C][C]0.7877[/C][C]0.5228[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.8419[/C][C]0.8434[/C][C]0.7927[/C][C]0.6422[/C][/ROW]
[ROW][C]Q11 excluded[/C][C]0.7289[/C][C]0.7292[/C][C]0.6609[/C][C]0.473[/C][/ROW]
[ROW][C]Q18 excluded[/C][C]0.7112[/C][C]0.7122[/C][C]0.6355[/C][C]0.452[/C][/ROW]
[ROW][C]Q25 excluded[/C][C]0.7661[/C][C]0.7677[/C][C]0.727[/C][C]0.5241[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=264401&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264401&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 itmes0.81290.81420.78770.5228
Q4 excluded0.84190.84340.79270.6422
Q11 excluded0.72890.72920.66090.473
Q18 excluded0.71120.71220.63550.452
Q25 excluded0.76610.76770.7270.5241


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 1 2 3 4 5 6 7 ;
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')