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, 16 Oct 2012 13:52:29 -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/2012/Oct/16/t13504099640kiabns5vng0c82.htm/, Retrieved Tue, 30 Apr 2024 17:30:19 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=179115, Retrieved Tue, 30 Apr 2024 17:30:19 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact82

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 11:40:37] [b98453cac15ba1066b407e146608df68]
- R  D  [Cronbach Alpha] [Task 1; A (Cronb....] [2012-10-16 17:32:33] [fe52c9364b5a1ce87739c78bce22047a]
-    D      [Cronbach Alpha] [Task 1; B (Cronb....] [2012-10-16 17:52:29] [a185e86db0c606cb3c73b2699db0f6b0] [Current]
-    D        [Cronbach Alpha] [Task 1; C (Cronb....] [2012-10-16 17:56:30] [fe52c9364b5a1ce87739c78bce22047a]
Feedback Forum

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
7	1	4	5
5	3	5	4
5	4	4	5
5	5	5	6
5	5	5	5
7	7	7	7
7	1	4	7
5	5	6	6
3	2	4	7
6	3	3	6
7	6	5	7
6	4	2	5
5	3	3	3
3	3	3	2
7	6	7	7
5	5	5	5
7	5	5	5
7	5	4	6
7	1	6	7
6	5	6	6
5	3	4	5
7	4	6	7
4	2	3	5
7	3	2	5
7	5	5	6
7	5	5	7
7	5	5	7
3	2	1	2
7	4	5	6
5	6	6	6
7	6	5	7
5	4	6	6
5	6	7	6
4	3	4	4
5	6	5	6
6	3	6	6
7	4	7	7
5	4	2	5
7	7	7	7
7	5	5	6
6	5	5	5
6	4	5	6
7	6	6	7
7	4	5	6
6	4	5	6
6	2	4	6
4	3	2	3
7	6	6	6
5	4	4	4
6	6	6	6
5	3	3	4
3	4	3	3
7	5	7	7
6	2	4	4
6	7	4	7
5	6	5	5
5	5	5	5
7	1	2	4
7	6	6	6
7	6	6	6
6	2	5	7
6	5	6	5
7	5	4	4
7	6	6	7
5	5	4	4
7	4	4	7
6	6	6	6
5	2	4	6
6	6	6	6
5	5	5	5
5	4	5	5
6	2	6	6
6	2	2	5
6	5	6	6
7	6	7	6
6	6	5	5
5	5	5	5
7	5	6	6
7	5	7	7
6	5	5	5
7	5	6	7
6	3	2	2
6	4	5	5
7	3	6	6
6	4	6	7
7	7	7	7
7	5	5	5
5	5	5	5
3	1	1	1
6	4	5	6
6	4	5	5
5	3	4	6
6	5	5	7
6	5	3	6
6	6	6	6
7	5	5	5
6	3	6	6
6	3	4	5
6	4	5	6
7	5	5	6
6	5	6	6
5	3	2	5
5	5	6	5
6	6	6	6
6	6	5	6
6	5	5	5
5	4	6	6
6	4	4	6
4	2	4	1
6	3	6	7
7	6	7	7
7	6	6	6
5	6	3	4
5	5	5	5
7	6	5	6
3	2	2	3
7	6	7	7
5	5	5	6
7	3	5	6
5	5	2	6
3	4	3	5
6	6	6	6
5	5	6	6
4	4	3	3
7	7	7	7
6	2	5	5
7	6	7	6
2	6	4	5
5	4	5	5
6	4	6	6
6	3	4	5
6	6	6	6
2	5	3	5
6	6	3	3
7	6	6	7
4	1	3	3
7	5	7	7
7	4	5	5
6	6	5	6
6	6	5	6
2	5	4	4
7	4	5	6
7	5	7	7
5	4	3	4
5	3	6	6
6	3	4	5
5	6	5	6
6	2	4	4
6	4	4	5
6	4	5	5
5	4	5	5
6	5	6	6
7	3	7	7
7	5	6	7
6	4	5	6
6	4	5	6
6	6	6	5
7	7	6	7
6	5	5	7
5	4	3	6
5	3	4	4
5	1	5	5
7	7	6	7
7	6	5	6
6	6	5	6
4	7	7	6
6	7	7	7
6	7	7	7
7	7	7	7
6	7	7	7
6	6	6	5
4	7	6	7
7	7	7	7
7	7	7	6
6	7	6	6
3	5	5	6
7	4	7	6
5	6	5	4
7	7	7	7
6	7	6	7
5	7	6	5
5	7	6	5
6	6	2	6
5	2	2	2
6	6	5	7
6	7	6	6
5	6	6	6
4	4	4	6
5	5	4	6
4	5	5	6
6	6	6	6
6	7	5	5
7	6	6	6
7	7	7	7
7	6	7	6
7	7	5	7
5	6	6	6
6	5	5	6
6	6	6	6
3	7	5	6
6	5	4	5
5	6	5	6
4	5	6	5
6	6	6	7
6	6	3	5
6	6	4	6
5	7	6	5
6	6	6	7
5	6	5	7
7	5	5	6
6	5	5	6
6	6	6	6
7	7	6	5
4	5	6	6
3	4	4	1
4	6	3	4
4	6	5	5
5	7	5	6
4	5	7	7
6	5	5	4
7	7	7	7
6	6	6	6
6	7	6	5
6	6	6	6
6	6	6	6
7	7	7	7
6	7	6	6
6	6	5	4
6	6	7	6
7	6	6	6
5	4	4	5
4	4	4	5
7	7	6	6
7	7	7	7
6	4	6	5
7	7	6	7
6	6	5	5
5	6	5	5
7	6	5	7
6	6	5	5
5	7	6	5
6	6	7	7
5	4	5	5
7	7	7	4
6	6	3	6
2	2	4	5
5	6	6	7
7	6	7	5
7	6	7	6
7	6	6	6
7	7	7	4
6	6	4	6
5	6	5	5
6	6	5	6
6	6	7	6
5	7	6	6
7	7	3	4
5	5	5	6
6	6	6	7
5	7	5	5
5	5	5	5
5	5	5	5
5	6	5	7
7	7	7	7
6	6	6	5
7	7	7	7
6	6	6	6
5	5	4	4
5	5	5	5
7	7	7	7
6	5	5	5
5	6	6	4
7	7	5	6
4	6	2	7
3	6	4	5
7	4	5	5
5	6	5	6
6	5	6	7
4	4	4	3
7	7	7	7
7	7	6	6
5	6	6	6
7	7	6	6
3	6	5	6
6	5	5	6
5	5	5	5
5	6	6	6
6	6	4	6
5	7	6	6
6	6	5	6
6	5	5	6
7	7	5	7
5	5	6	7
7	7	7	6
6	5	6	6
6	5	5	5
7	7	6	6
7	4	6	6
5	6	4	6
7	7	6	7
5	5	4	5
6	5	6	6
7	6	6	6
6	5	6	6
5	6	5	6
6	7	5	4
7	7	5	6
6	7	6	6
7	7	7	7
7	7	7	7
6	4	4	6
6	7	6	6
4	7	4	4
7	6	7	5
6	6	4	6
4	5	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'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=179115&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=179115&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=179115&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 itmes0.76440.7720.7360.4584
Q7, excluded0.74880.75740.68920.51
Q14, excluded0.76180.7630.68780.5176
Q21, excluded0.63330.65150.57150.3839
Q28 excluded0.68260.68680.6220.4223

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7644 & 0.772 & 0.736 & 0.4584 \tabularnewline
Q7, excluded & 0.7488 & 0.7574 & 0.6892 & 0.51 \tabularnewline
Q14, excluded & 0.7618 & 0.763 & 0.6878 & 0.5176 \tabularnewline
Q21, excluded & 0.6333 & 0.6515 & 0.5715 & 0.3839 \tabularnewline
Q28 excluded & 0.6826 & 0.6868 & 0.622 & 0.4223 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=179115&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]0.7644[/C][C]0.772[/C][C]0.736[/C][C]0.4584[/C][/ROW]
[ROW][C]Q7, excluded[/C][C]0.7488[/C][C]0.7574[/C][C]0.6892[/C][C]0.51[/C][/ROW]
[ROW][C]Q14, excluded[/C][C]0.7618[/C][C]0.763[/C][C]0.6878[/C][C]0.5176[/C][/ROW]
[ROW][C]Q21, excluded[/C][C]0.6333[/C][C]0.6515[/C][C]0.5715[/C][C]0.3839[/C][/ROW]
[ROW][C]Q28 excluded[/C][C]0.6826[/C][C]0.6868[/C][C]0.622[/C][C]0.4223[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=179115&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=179115&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 itmes0.76440.7720.7360.4584
Q7, excluded0.74880.75740.68920.51
Q14, excluded0.76180.7630.68780.5176
Q21, excluded0.63330.65150.57150.3839
Q28 excluded0.68260.68680.6220.4223


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')