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Author

*Unverified author*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Thu, 01 Jul 2021 01:30:48 +0200

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/2021/Jul/01/t1625096067j78jj0ci4umedfo.htm/, Retrieved Sun, 28 Apr 2024 10:44:11 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=319470, Retrieved Sun, 28 Apr 2024 10:44:11 +0000

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Original text written by user:

Proyecto de investigación en diseño y evaluación de recursos educativos digitales. Universidad de Cartagena.

IsPrivate?

No (this computation is public)

User-defined keywords

Competencias digitales, secundaria, TIC, evaluación

Estimated Impact

104

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

-       [Cronbach Alpha] [EVALUACION COMPET...] [2021-06-30 23:30:48] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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Histogram

Boxplots

5	5	3	3	1	1	4	4	1	4	3	1	1	1	4	1	4	4	4	1	2	2	1	4	2	2	2	4	4	3	2	5	4	4
3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	4	4	4	4	4	4	3	4	4	4	4	4	4	4	4	4	4	4
5	3	5	5	5	3	5	5	2	5	4	5	4	4	5	5	5	3	5	5	5	4	5	5	4	3	3	5	5	4	4	5	5	5
5	5	5	5	5	5	5	5	3	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	3	5	5	5	4	5	5	5
5	3	5	5	5	5	5	5	4	5	5	4	5	5	5	5	5	5	5	5	3	4	5	5	3	3	2	5	5	5	5	5	5	5
4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	5	4	5	3	4	4	5	4	5	4	4

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	0 seconds
R Server	Big Analytics Cloud Computing Center

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input view raw input (R code)  \tabularnewline
Raw Outputview raw output of R engine  \tabularnewline
Computing time0 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=319470&T=0

[TABLE]
[ROW]

Summary of computational transaction[/C][/ROW] [ROW]

Raw Input[/C]

view raw input (R code) [/C][/ROW] [ROW]

Raw Output[/C]

view raw output of R engine [/C][/ROW] [ROW]

Computing time[/C]

0 seconds[/C][/ROW] [ROW]

R Server[/C]

Big Analytics Cloud Computing Center[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=319470&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319470&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	0 seconds
R Server	Big Analytics Cloud Computing Center

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.974	0.9779	1	0.565
1.1 excluded	0.9748	0.9785	1	0.5793
1.2 excluded	0.9753	0.9795	1	0.5921
1.3 excluded	0.9722	0.9762	1	0.5543
1.4 excluded	0.9722	0.9762	1	0.5543
1.5 excluded	0.9718	0.9763	1	0.5553
1.6 excluded	0.9724	0.9768	1	0.5602
1.7 excluded	0.9733	0.9769	1	0.5616
1.8 excluded	0.9733	0.9769	1	0.5616
1.9 excluded	0.9739	0.9782	1	0.5764
2.1 excluded	0.9733	0.9769	1	0.5616
2.2 excluded	0.9725	0.9764	1	0.5559
2.3 excluded	0.9721	0.9766	1	0.5582
2.4 excluded	0.9718	0.9764	1	0.5561
2.5 excluded	0.9718	0.9764	1	0.5561
2.6 excluded	0.9733	0.9769	1	0.5616
2.7 excluded	0.9718	0.9763	1	0.5553
3.1 excluded	0.9733	0.9766	1	0.5583
3.2 excluded	0.9747	0.979	1	0.5853
3.3 excluded	0.9733	0.9766	1	0.5583
3.4 excluded	0.9723	0.9767	1	0.5596
3.5 excluded	0.9737	0.9779	1	0.5728
3.6 excluded	0.9727	0.9771	1	0.5641
4.1 excluded	0.9718	0.9763	1	0.5553
4.2 excluded	0.9732	0.9765	1	0.5575
4.3 excluded	0.9737	0.978	1	0.5745
4.4 excluded	0.9748	0.9789	1	0.584
5.1 excluded	0.9758	0.9799	1	0.5969
5.2 excluded	0.9733	0.9766	1	0.5583
5.3 excluded	0.9733	0.9766	1	0.5583
5.4 excluded	0.9729	0.9771	1	0.5638
5.5 excluded	0.9728	0.9772	1	0.5648
5.6 excluded	0.9745	0.9785	1	0.5799
5.7 excluded	0.9733	0.9766	1	0.5583
5.8 excluded	0.9733	0.9766	1	0.5583

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.974 & 0.9779 & 1 & 0.565 \tabularnewline
1.1 excluded & 0.9748 & 0.9785 & 1 & 0.5793 \tabularnewline
1.2 excluded & 0.9753 & 0.9795 & 1 & 0.5921 \tabularnewline
1.3 excluded & 0.9722 & 0.9762 & 1 & 0.5543 \tabularnewline
1.4 excluded & 0.9722 & 0.9762 & 1 & 0.5543 \tabularnewline
1.5 excluded & 0.9718 & 0.9763 & 1 & 0.5553 \tabularnewline
1.6 excluded & 0.9724 & 0.9768 & 1 & 0.5602 \tabularnewline
1.7 excluded & 0.9733 & 0.9769 & 1 & 0.5616 \tabularnewline
1.8 excluded & 0.9733 & 0.9769 & 1 & 0.5616 \tabularnewline
1.9 excluded & 0.9739 & 0.9782 & 1 & 0.5764 \tabularnewline
2.1 excluded & 0.9733 & 0.9769 & 1 & 0.5616 \tabularnewline
2.2 excluded & 0.9725 & 0.9764 & 1 & 0.5559 \tabularnewline
2.3 excluded & 0.9721 & 0.9766 & 1 & 0.5582 \tabularnewline
2.4 excluded & 0.9718 & 0.9764 & 1 & 0.5561 \tabularnewline
2.5 excluded & 0.9718 & 0.9764 & 1 & 0.5561 \tabularnewline
2.6 excluded & 0.9733 & 0.9769 & 1 & 0.5616 \tabularnewline
2.7 excluded & 0.9718 & 0.9763 & 1 & 0.5553 \tabularnewline
3.1 excluded & 0.9733 & 0.9766 & 1 & 0.5583 \tabularnewline
3.2 excluded & 0.9747 & 0.979 & 1 & 0.5853 \tabularnewline
3.3 excluded & 0.9733 & 0.9766 & 1 & 0.5583 \tabularnewline
3.4 excluded & 0.9723 & 0.9767 & 1 & 0.5596 \tabularnewline
3.5 excluded & 0.9737 & 0.9779 & 1 & 0.5728 \tabularnewline
3.6 excluded & 0.9727 & 0.9771 & 1 & 0.5641 \tabularnewline
4.1 excluded & 0.9718 & 0.9763 & 1 & 0.5553 \tabularnewline
4.2 excluded & 0.9732 & 0.9765 & 1 & 0.5575 \tabularnewline
4.3 excluded & 0.9737 & 0.978 & 1 & 0.5745 \tabularnewline
4.4 excluded & 0.9748 & 0.9789 & 1 & 0.584 \tabularnewline
5.1 excluded & 0.9758 & 0.9799 & 1 & 0.5969 \tabularnewline
5.2 excluded & 0.9733 & 0.9766 & 1 & 0.5583 \tabularnewline
5.3 excluded & 0.9733 & 0.9766 & 1 & 0.5583 \tabularnewline
5.4 excluded & 0.9729 & 0.9771 & 1 & 0.5638 \tabularnewline
5.5 excluded & 0.9728 & 0.9772 & 1 & 0.5648 \tabularnewline
5.6 excluded & 0.9745 & 0.9785 & 1 & 0.5799 \tabularnewline
5.7 excluded & 0.9733 & 0.9766 & 1 & 0.5583 \tabularnewline
5.8 excluded & 0.9733 & 0.9766 & 1 & 0.5583 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=319470&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]0.974[/C][C]0.9779[/C][C]1[/C][C]0.565[/C][/ROW]
[ROW][C]1.1 excluded[/C][C]0.9748[/C][C]0.9785[/C][C]1[/C][C]0.5793[/C][/ROW]
[ROW][C]1.2 excluded[/C][C]0.9753[/C][C]0.9795[/C][C]1[/C][C]0.5921[/C][/ROW]
[ROW][C]1.3 excluded[/C][C]0.9722[/C][C]0.9762[/C][C]1[/C][C]0.5543[/C][/ROW]
[ROW][C]1.4 excluded[/C][C]0.9722[/C][C]0.9762[/C][C]1[/C][C]0.5543[/C][/ROW]
[ROW][C]1.5 excluded[/C][C]0.9718[/C][C]0.9763[/C][C]1[/C][C]0.5553[/C][/ROW]
[ROW][C]1.6 excluded[/C][C]0.9724[/C][C]0.9768[/C][C]1[/C][C]0.5602[/C][/ROW]
[ROW][C]1.7 excluded[/C][C]0.9733[/C][C]0.9769[/C][C]1[/C][C]0.5616[/C][/ROW]
[ROW][C]1.8 excluded[/C][C]0.9733[/C][C]0.9769[/C][C]1[/C][C]0.5616[/C][/ROW]
[ROW][C]1.9 excluded[/C][C]0.9739[/C][C]0.9782[/C][C]1[/C][C]0.5764[/C][/ROW]
[ROW][C]2.1 excluded[/C][C]0.9733[/C][C]0.9769[/C][C]1[/C][C]0.5616[/C][/ROW]
[ROW][C]2.2 excluded[/C][C]0.9725[/C][C]0.9764[/C][C]1[/C][C]0.5559[/C][/ROW]
[ROW][C]2.3 excluded[/C][C]0.9721[/C][C]0.9766[/C][C]1[/C][C]0.5582[/C][/ROW]
[ROW][C]2.4 excluded[/C][C]0.9718[/C][C]0.9764[/C][C]1[/C][C]0.5561[/C][/ROW]
[ROW][C]2.5 excluded[/C][C]0.9718[/C][C]0.9764[/C][C]1[/C][C]0.5561[/C][/ROW]
[ROW][C]2.6 excluded[/C][C]0.9733[/C][C]0.9769[/C][C]1[/C][C]0.5616[/C][/ROW]
[ROW][C]2.7 excluded[/C][C]0.9718[/C][C]0.9763[/C][C]1[/C][C]0.5553[/C][/ROW]
[ROW][C]3.1 excluded[/C][C]0.9733[/C][C]0.9766[/C][C]1[/C][C]0.5583[/C][/ROW]
[ROW][C]3.2 excluded[/C][C]0.9747[/C][C]0.979[/C][C]1[/C][C]0.5853[/C][/ROW]
[ROW][C]3.3 excluded[/C][C]0.9733[/C][C]0.9766[/C][C]1[/C][C]0.5583[/C][/ROW]
[ROW][C]3.4 excluded[/C][C]0.9723[/C][C]0.9767[/C][C]1[/C][C]0.5596[/C][/ROW]
[ROW][C]3.5 excluded[/C][C]0.9737[/C][C]0.9779[/C][C]1[/C][C]0.5728[/C][/ROW]
[ROW][C]3.6 excluded[/C][C]0.9727[/C][C]0.9771[/C][C]1[/C][C]0.5641[/C][/ROW]
[ROW][C]4.1 excluded[/C][C]0.9718[/C][C]0.9763[/C][C]1[/C][C]0.5553[/C][/ROW]
[ROW][C]4.2 excluded[/C][C]0.9732[/C][C]0.9765[/C][C]1[/C][C]0.5575[/C][/ROW]
[ROW][C]4.3 excluded[/C][C]0.9737[/C][C]0.978[/C][C]1[/C][C]0.5745[/C][/ROW]
[ROW][C]4.4 excluded[/C][C]0.9748[/C][C]0.9789[/C][C]1[/C][C]0.584[/C][/ROW]
[ROW][C]5.1 excluded[/C][C]0.9758[/C][C]0.9799[/C][C]1[/C][C]0.5969[/C][/ROW]
[ROW][C]5.2 excluded[/C][C]0.9733[/C][C]0.9766[/C][C]1[/C][C]0.5583[/C][/ROW]
[ROW][C]5.3 excluded[/C][C]0.9733[/C][C]0.9766[/C][C]1[/C][C]0.5583[/C][/ROW]
[ROW][C]5.4 excluded[/C][C]0.9729[/C][C]0.9771[/C][C]1[/C][C]0.5638[/C][/ROW]
[ROW][C]5.5 excluded[/C][C]0.9728[/C][C]0.9772[/C][C]1[/C][C]0.5648[/C][/ROW]
[ROW][C]5.6 excluded[/C][C]0.9745[/C][C]0.9785[/C][C]1[/C][C]0.5799[/C][/ROW]
[ROW][C]5.7 excluded[/C][C]0.9733[/C][C]0.9766[/C][C]1[/C][C]0.5583[/C][/ROW]
[ROW][C]5.8 excluded[/C][C]0.9733[/C][C]0.9766[/C][C]1[/C][C]0.5583[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=319470&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319470&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	0.974	0.9779	1	0.565
1.1 excluded	0.9748	0.9785	1	0.5793
1.2 excluded	0.9753	0.9795	1	0.5921
1.3 excluded	0.9722	0.9762	1	0.5543
1.4 excluded	0.9722	0.9762	1	0.5543
1.5 excluded	0.9718	0.9763	1	0.5553
1.6 excluded	0.9724	0.9768	1	0.5602
1.7 excluded	0.9733	0.9769	1	0.5616
1.8 excluded	0.9733	0.9769	1	0.5616
1.9 excluded	0.9739	0.9782	1	0.5764
2.1 excluded	0.9733	0.9769	1	0.5616
2.2 excluded	0.9725	0.9764	1	0.5559
2.3 excluded	0.9721	0.9766	1	0.5582
2.4 excluded	0.9718	0.9764	1	0.5561
2.5 excluded	0.9718	0.9764	1	0.5561
2.6 excluded	0.9733	0.9769	1	0.5616
2.7 excluded	0.9718	0.9763	1	0.5553
3.1 excluded	0.9733	0.9766	1	0.5583
3.2 excluded	0.9747	0.979	1	0.5853
3.3 excluded	0.9733	0.9766	1	0.5583
3.4 excluded	0.9723	0.9767	1	0.5596
3.5 excluded	0.9737	0.9779	1	0.5728
3.6 excluded	0.9727	0.9771	1	0.5641
4.1 excluded	0.9718	0.9763	1	0.5553
4.2 excluded	0.9732	0.9765	1	0.5575
4.3 excluded	0.9737	0.978	1	0.5745
4.4 excluded	0.9748	0.9789	1	0.584
5.1 excluded	0.9758	0.9799	1	0.5969
5.2 excluded	0.9733	0.9766	1	0.5583
5.3 excluded	0.9733	0.9766	1	0.5583
5.4 excluded	0.9729	0.9771	1	0.5638
5.5 excluded	0.9728	0.9772	1	0.5648
5.6 excluded	0.9745	0.9785	1	0.5799
5.7 excluded	0.9733	0.9766	1	0.5583
5.8 excluded	0.9733	0.9766	1	0.5583

Parameters (Session):

par1 = CIERTO ;

Parameters (R input):

par1 = CIERTO ;

R code (references can be found in the software module):

library(psych)
par1b <- T
if(par1=='FALSE') par1b <- F
z <- t(y)
(r <- alpha(z,check.keys=par1b))
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')

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Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code