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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 08:10:55 -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/t13825302669v0m44okmn2w90u.htm/, Retrieved Sat, 27 Apr 2024 18:28:19 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=218848, Retrieved Sat, 27 Apr 2024 18:28:19 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact54

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [WS3 T2.3] [2013-10-23 12:10:55] [b11444c1beff55480dbed17c58cce579] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
4 7 5 7
5 5 5 5
4 6 5 5
3 6 6 6
6 6 6 6
5 5 5 7
5 7 5 6
1 6 6 7
4 7 7 7
5 6 6 6
6 7 7 7
7 7 6 7
5 6 6 5
6 6 6 6
5 7 6 7
4 6 6 6
7 7 7 7
7 7 7 7
6 7 7 7
6 7 6 6
2 5 5 4
7 7 7 7
5 5 5 6
4 6 7 7
7 7 6 7
1 6 2 5
1 6 2 5
7 6 7 7
4 6 4 6
5 6 4 6
5 6 5 6
5 5 5 6
4 3 4 1
5 3 7 5
5 5 7 7
4 6 4 5
7 7 7 7
7 7 4 5
7 7 6 7
4 6 6 6
7 7 6 7
7 7 6 6
4 6 6 6
3 6 7 5
2 5 6 6
6 6 6 6
4 6 4 5
5 7 7 7
4 6 6 6
7 7 7 7
4 6 6 5
6 5 7 5
7 7 7 7
1 4 2 3
5 7 6 6
4 5 6 6
5 6 5 5
5 7 6 6
5 7 6 6
5 7 6 7
5 7 6 7
5 6 6 6
6 6 4 5
3 6 3 4
4 4 4 5
6 6 7 6
6 6 6 6
3 7 6 7
5 7 7 6
2 7 7 7
7 7 7 7
7 7 5 7
4 6 6 6
6 5 3 5
6 7 6 7
3 5 5 5
3 5 5 5
6 7 6 6
7 7 6 7
3 2 4 3
1 6 4 4
5 6 5 5
5 6 6 6
5 6 5 6
5 5 5 6
6 6 6 6
6 7 7 7
5 5 5 7
7 7 7 7
6 6 7 7
1 5 2 2
3 6 5 5
5 7 4 6
1 7 7 6
6 6 6 6
4 7 7 7
5 6 5 5
5 5 5 5
6 5 4 6
5 6 7 6
5 6 5 7
4 6 4 4
6 6 6 6
6 6 6 6
4 5 5 5
5 5 5 5
5 5 3 5
2 7 5 6
7 7 6 7
5 6 6 6
5 7 7 7
2 7 7 7
3 4 5 5
5 5 5 6
5 7 6 7
5 7 4 7
6 7 7 7
6 6 5 7
4 5 6 5
6 7 7 7
3 4 7 7
6 6 6 6
4 6 6 5
3 3 4 5
4 7 7 7
6 6 6 7
4 7 5 6
6 6 6 6
5 5 5 6
5 6 5 6
5 6 6 6
3 7 6 6
5 6 4 5
4 7 6 6
5 6 7 7
5 6 6 6
1 7 7 7
4 7 7 7
7 7 6 6
4 7 5 6
6 6 5 7
7 7 5 5
6 7 7 5
5 6 3 6
6 7 6 7
5 6 5 5
5 7 7 7
6 6 4 5
5 5 6 6
3 4 4 5
6 7 6 7
7 7 7 7
4 5 4 5
5 7 6 7
4 6 7 6
5 5 5 6
2 6 6 6
7 7 4 7
5 7 4 6
4 6 6 5
2 5 4 5
4 6 3 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'Sir Maurice George Kendall' @ kendall.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 & 'Sir Maurice George Kendall' @ kendall.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=218848&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]'Sir Maurice George Kendall' @ kendall.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=218848&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=218848&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'Sir Maurice George Kendall' @ kendall.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.74160.77060.74010.4565
Q1_1 excluded0.77670.78370.73030.5471
Q1_8 excluded0.68420.71680.65530.4576
Q1_15 excluded0.67740.720.65420.4616
Q1_22 excluded0.60230.62770.53130.3598

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7416 & 0.7706 & 0.7401 & 0.4565 \tabularnewline
Q1_1 excluded & 0.7767 & 0.7837 & 0.7303 & 0.5471 \tabularnewline
Q1_8 excluded & 0.6842 & 0.7168 & 0.6553 & 0.4576 \tabularnewline
Q1_15 excluded & 0.6774 & 0.72 & 0.6542 & 0.4616 \tabularnewline
Q1_22 excluded & 0.6023 & 0.6277 & 0.5313 & 0.3598 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=218848&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]0.7416[/C][C]0.7706[/C][C]0.7401[/C][C]0.4565[/C][/ROW]
[ROW][C]Q1_1 excluded[/C][C]0.7767[/C][C]0.7837[/C][C]0.7303[/C][C]0.5471[/C][/ROW]
[ROW][C]Q1_8 excluded[/C][C]0.6842[/C][C]0.7168[/C][C]0.6553[/C][C]0.4576[/C][/ROW]
[ROW][C]Q1_15 excluded[/C][C]0.6774[/C][C]0.72[/C][C]0.6542[/C][C]0.4616[/C][/ROW]
[ROW][C]Q1_22 excluded[/C][C]0.6023[/C][C]0.6277[/C][C]0.5313[/C][C]0.3598[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=218848&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=218848&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 itmes0.74160.77060.74010.4565
Q1_1 excluded0.77670.78370.73030.5471
Q1_8 excluded0.68420.71680.65530.4576
Q1_15 excluded0.67740.720.65420.4616
Q1_22 excluded0.60230.62770.53130.3598


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')