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Author's title

Author

*Unverified author*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Sun, 21 Oct 2012 23:02:25 -0400

Cite this page as follows

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2012/Oct/21/t1350875520hx7rhi78n0aeaw0.htm/, Retrieved Sun, 28 Apr 2024 23:52:16 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=181196, Retrieved Sun, 28 Apr 2024 23:52:16 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)

-       [Cronbach Alpha] [VALIDEZ Y CONFIAB...] [2012-10-22 03:02:25] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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Dataseries X:

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Histogram

Boxplots

5	5	5	4	5	6
2	3	1	5	4	4
5	5	1	5	5	5
3	4	2	3	5	3
2	3	2	1	4	3
6	6	5	6	6	6
6	6	6	6	5	6
6	6	4	5	5	3
2	4	1	7	6	6
6	6	6	6	6	6
6	6	6	5	6	6
5	6	5	6	5	4

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 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=181196&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=181196&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=181196&T=0

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 seconds
R Server	'Sir Maurice George Kendall' @ kendall.wessa.net

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.8667	0.8938	0.9624	0.5838
Q16 excluded	0.8165	0.8655	0.9123	0.5627
Q19 excluded	0.8132	0.8512	0.8787	0.5336
Q23 excluded	0.8478	0.878	0.9417	0.5899
Q27 excluded	0.8672	0.8928	0.9378	0.625
Q30 excluded	0.8601	0.8744	0.9455	0.582
Q32 excluded	0.8529	0.8864	0.9284	0.6094

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8667 & 0.8938 & 0.9624 & 0.5838 \tabularnewline
Q16 excluded & 0.8165 & 0.8655 & 0.9123 & 0.5627 \tabularnewline
Q19 excluded & 0.8132 & 0.8512 & 0.8787 & 0.5336 \tabularnewline
Q23 excluded & 0.8478 & 0.878 & 0.9417 & 0.5899 \tabularnewline
Q27 excluded & 0.8672 & 0.8928 & 0.9378 & 0.625 \tabularnewline
Q30 excluded & 0.8601 & 0.8744 & 0.9455 & 0.582 \tabularnewline
Q32 excluded & 0.8529 & 0.8864 & 0.9284 & 0.6094 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=181196&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]0.8667[/C][C]0.8938[/C][C]0.9624[/C][C]0.5838[/C][/ROW]
[ROW][C]Q16 excluded[/C][C]0.8165[/C][C]0.8655[/C][C]0.9123[/C][C]0.5627[/C][/ROW]
[ROW][C]Q19 excluded[/C][C]0.8132[/C][C]0.8512[/C][C]0.8787[/C][C]0.5336[/C][/ROW]
[ROW][C]Q23 excluded[/C][C]0.8478[/C][C]0.878[/C][C]0.9417[/C][C]0.5899[/C][/ROW]
[ROW][C]Q27 excluded[/C][C]0.8672[/C][C]0.8928[/C][C]0.9378[/C][C]0.625[/C][/ROW]
[ROW][C]Q30 excluded[/C][C]0.8601[/C][C]0.8744[/C][C]0.9455[/C][C]0.582[/C][/ROW]
[ROW][C]Q32 excluded[/C][C]0.8529[/C][C]0.8864[/C][C]0.9284[/C][C]0.6094[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=181196&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=181196&T=1

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.8667	0.8938	0.9624	0.5838
Q16 excluded	0.8165	0.8655	0.9123	0.5627
Q19 excluded	0.8132	0.8512	0.8787	0.5336
Q23 excluded	0.8478	0.878	0.9417	0.5899
Q27 excluded	0.8672	0.8928	0.9378	0.625
Q30 excluded	0.8601	0.8744	0.9455	0.582
Q32 excluded	0.8529	0.8864	0.9284	0.6094

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')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code