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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

Thu, 06 May 2021 01:52:39 +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/May/06/t1620258823hjw3j3mle9g1pr3.htm/, Retrieved Sun, 23 Aug 2026 09:23:21 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=319421, Retrieved Sun, 23 Aug 2026 09:23:21 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

tesis

Estimated Impact

428

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

-       [Cronbach Alpha] [corelación] [2021-05-05 23:52:39] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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Dataseries X:

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Histogram

Boxplots

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

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	Big Analytics Cloud Computing Center
R Framework error message	Warning: there are blank lines in the 'Data X' field. Please, use NA for missing data - blank lines are simply deleted and are NOT treated as missing values.

\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 time1 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \tabularnewline
R Framework error message & Warning: there are blank lines in the 'Data X' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values. \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=319421&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]

1 seconds[/C][/ROW] [ROW]

R Server[/C]

Big Analytics Cloud Computing Center[/C][/ROW] [ROW]

R Framework error message[/C][C]

Warning: there are blank lines in the 'Data X' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.

[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=319421&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319421&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	Big Analytics Cloud Computing Center
R Framework error message	Warning: there are blank lines in the 'Data X' field. Please, use NA for missing data - blank lines are simply deleted and are NOT treated as missing values.

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.8567	0.8471	1	0.1558
Q1 excluded	0.8598	0.853	0.9862	0.1667
Q2 excluded	0.856	0.8468	0.9945	0.1601
Q3 excluded	0.8531	0.8419	0.9808	0.1551
Q4 excluded	0.8543	0.8435	0.9906	0.1568
Q5 excluded	0.8524	0.8392	0.9964	0.1525
Q6 excluded	0.8493	0.8366	0.9839	0.15
Q7 excluded	0.8444	0.833	0.9803	0.1467
Q8 excluded	0.852	0.8404	0.9979	0.1537
Q9 excluded	0.8468	0.838	0.9833	0.1514
Q10 excluded	0.8616	0.8491	0.9839	0.1625
Q11 excluded	0.8505	0.8404	0.9927	0.1536
Q12 excluded	0.8556	0.8456	0.9893	0.1589
Q13 excluded	0.8392	0.8284	0.9853	0.1427
Q14 excluded	0.8597	0.8483	0.9966	0.1617
Q15 excluded	0.8387	0.8299	0.9923	0.144
Q16 excluded	0.8484	0.8386	0.9917	0.1519
Q17 excluded	0.8497	0.8394	0.9967	0.1527
Q18 excluded	0.8467	0.8369	0.9822	0.1503
Q19 excluded	0.8571	0.8462	0.986	0.1595
Q20 excluded	0.8551	0.8435	0.9875	0.1567
Q21 excluded	0.8583	0.8514	0.9841	0.165
Q22 excluded	0.8389	0.8324	0.9967	0.1462
Q23 excluded	0.8551	0.8456	0.9927	0.1588
Q24 excluded	0.8573	0.849	0.9912	0.1624
Q25 excluded	0.8532	0.8408	0.9865	0.154
Q26 excluded	0.8571	0.8492	0.9857	0.1627
Q27 excluded	0.8569	0.8506	0.9973	0.1641
Q28 excluded	0.8571	0.848	0.9918	0.1613
Q29 excluded	0.8576	0.8496	0.9995	0.1631
Q30 excluded	0.8463	0.8368	0.987	0.1502

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8567 & 0.8471 & 1 & 0.1558 \tabularnewline
Q1 excluded & 0.8598 & 0.853 & 0.9862 & 0.1667 \tabularnewline
Q2 excluded & 0.856 & 0.8468 & 0.9945 & 0.1601 \tabularnewline
Q3 excluded & 0.8531 & 0.8419 & 0.9808 & 0.1551 \tabularnewline
Q4 excluded & 0.8543 & 0.8435 & 0.9906 & 0.1568 \tabularnewline
Q5 excluded & 0.8524 & 0.8392 & 0.9964 & 0.1525 \tabularnewline
Q6 excluded & 0.8493 & 0.8366 & 0.9839 & 0.15 \tabularnewline
Q7 excluded & 0.8444 & 0.833 & 0.9803 & 0.1467 \tabularnewline
Q8 excluded & 0.852 & 0.8404 & 0.9979 & 0.1537 \tabularnewline
Q9 excluded & 0.8468 & 0.838 & 0.9833 & 0.1514 \tabularnewline
Q10 excluded & 0.8616 & 0.8491 & 0.9839 & 0.1625 \tabularnewline
Q11 excluded & 0.8505 & 0.8404 & 0.9927 & 0.1536 \tabularnewline
Q12 excluded & 0.8556 & 0.8456 & 0.9893 & 0.1589 \tabularnewline
Q13 excluded & 0.8392 & 0.8284 & 0.9853 & 0.1427 \tabularnewline
Q14 excluded & 0.8597 & 0.8483 & 0.9966 & 0.1617 \tabularnewline
Q15 excluded & 0.8387 & 0.8299 & 0.9923 & 0.144 \tabularnewline
Q16 excluded & 0.8484 & 0.8386 & 0.9917 & 0.1519 \tabularnewline
Q17 excluded & 0.8497 & 0.8394 & 0.9967 & 0.1527 \tabularnewline
Q18 excluded & 0.8467 & 0.8369 & 0.9822 & 0.1503 \tabularnewline
Q19 excluded & 0.8571 & 0.8462 & 0.986 & 0.1595 \tabularnewline
Q20 excluded & 0.8551 & 0.8435 & 0.9875 & 0.1567 \tabularnewline
Q21 excluded & 0.8583 & 0.8514 & 0.9841 & 0.165 \tabularnewline
Q22 excluded & 0.8389 & 0.8324 & 0.9967 & 0.1462 \tabularnewline
Q23 excluded & 0.8551 & 0.8456 & 0.9927 & 0.1588 \tabularnewline
Q24 excluded & 0.8573 & 0.849 & 0.9912 & 0.1624 \tabularnewline
Q25 excluded & 0.8532 & 0.8408 & 0.9865 & 0.154 \tabularnewline
Q26 excluded & 0.8571 & 0.8492 & 0.9857 & 0.1627 \tabularnewline
Q27 excluded & 0.8569 & 0.8506 & 0.9973 & 0.1641 \tabularnewline
Q28 excluded & 0.8571 & 0.848 & 0.9918 & 0.1613 \tabularnewline
Q29 excluded & 0.8576 & 0.8496 & 0.9995 & 0.1631 \tabularnewline
Q30
 excluded & 0.8463 & 0.8368 & 0.987 & 0.1502 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=319421&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]0.8567[/C][C]0.8471[/C][C]1[/C][C]0.1558[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.8598[/C][C]0.853[/C][C]0.9862[/C][C]0.1667[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.856[/C][C]0.8468[/C][C]0.9945[/C][C]0.1601[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.8531[/C][C]0.8419[/C][C]0.9808[/C][C]0.1551[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.8543[/C][C]0.8435[/C][C]0.9906[/C][C]0.1568[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.8524[/C][C]0.8392[/C][C]0.9964[/C][C]0.1525[/C][/ROW]
[ROW][C]Q6 excluded[/C][C]0.8493[/C][C]0.8366[/C][C]0.9839[/C][C]0.15[/C][/ROW]
[ROW][C]Q7 excluded[/C][C]0.8444[/C][C]0.833[/C][C]0.9803[/C][C]0.1467[/C][/ROW]
[ROW][C]Q8 excluded[/C][C]0.852[/C][C]0.8404[/C][C]0.9979[/C][C]0.1537[/C][/ROW]
[ROW][C]Q9 excluded[/C][C]0.8468[/C][C]0.838[/C][C]0.9833[/C][C]0.1514[/C][/ROW]
[ROW][C]Q10 excluded[/C][C]0.8616[/C][C]0.8491[/C][C]0.9839[/C][C]0.1625[/C][/ROW]
[ROW][C]Q11 excluded[/C][C]0.8505[/C][C]0.8404[/C][C]0.9927[/C][C]0.1536[/C][/ROW]
[ROW][C]Q12 excluded[/C][C]0.8556[/C][C]0.8456[/C][C]0.9893[/C][C]0.1589[/C][/ROW]
[ROW][C]Q13 excluded[/C][C]0.8392[/C][C]0.8284[/C][C]0.9853[/C][C]0.1427[/C][/ROW]
[ROW][C]Q14 excluded[/C][C]0.8597[/C][C]0.8483[/C][C]0.9966[/C][C]0.1617[/C][/ROW]
[ROW][C]Q15 excluded[/C][C]0.8387[/C][C]0.8299[/C][C]0.9923[/C][C]0.144[/C][/ROW]
[ROW][C]Q16 excluded[/C][C]0.8484[/C][C]0.8386[/C][C]0.9917[/C][C]0.1519[/C][/ROW]
[ROW][C]Q17 excluded[/C][C]0.8497[/C][C]0.8394[/C][C]0.9967[/C][C]0.1527[/C][/ROW]
[ROW][C]Q18 excluded[/C][C]0.8467[/C][C]0.8369[/C][C]0.9822[/C][C]0.1503[/C][/ROW]
[ROW][C]Q19 excluded[/C][C]0.8571[/C][C]0.8462[/C][C]0.986[/C][C]0.1595[/C][/ROW]
[ROW][C]Q20 excluded[/C][C]0.8551[/C][C]0.8435[/C][C]0.9875[/C][C]0.1567[/C][/ROW]
[ROW][C]Q21 excluded[/C][C]0.8583[/C][C]0.8514[/C][C]0.9841[/C][C]0.165[/C][/ROW]
[ROW][C]Q22 excluded[/C][C]0.8389[/C][C]0.8324[/C][C]0.9967[/C][C]0.1462[/C][/ROW]
[ROW][C]Q23 excluded[/C][C]0.8551[/C][C]0.8456[/C][C]0.9927[/C][C]0.1588[/C][/ROW]
[ROW][C]Q24 excluded[/C][C]0.8573[/C][C]0.849[/C][C]0.9912[/C][C]0.1624[/C][/ROW]
[ROW][C]Q25 excluded[/C][C]0.8532[/C][C]0.8408[/C][C]0.9865[/C][C]0.154[/C][/ROW]
[ROW][C]Q26 excluded[/C][C]0.8571[/C][C]0.8492[/C][C]0.9857[/C][C]0.1627[/C][/ROW]
[ROW][C]Q27 excluded[/C][C]0.8569[/C][C]0.8506[/C][C]0.9973[/C][C]0.1641[/C][/ROW]
[ROW][C]Q28 excluded[/C][C]0.8571[/C][C]0.848[/C][C]0.9918[/C][C]0.1613[/C][/ROW]
[ROW][C]Q29 excluded[/C][C]0.8576[/C][C]0.8496[/C][C]0.9995[/C][C]0.1631[/C][/ROW]
[ROW][C]Q30
 excluded[/C][C]0.8463[/C][C]0.8368[/C][C]0.987[/C][C]0.1502[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=319421&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319421&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	0.8567	0.8471	1	0.1558
Q1 excluded	0.8598	0.853	0.9862	0.1667
Q2 excluded	0.856	0.8468	0.9945	0.1601
Q3 excluded	0.8531	0.8419	0.9808	0.1551
Q4 excluded	0.8543	0.8435	0.9906	0.1568
Q5 excluded	0.8524	0.8392	0.9964	0.1525
Q6 excluded	0.8493	0.8366	0.9839	0.15
Q7 excluded	0.8444	0.833	0.9803	0.1467
Q8 excluded	0.852	0.8404	0.9979	0.1537
Q9 excluded	0.8468	0.838	0.9833	0.1514
Q10 excluded	0.8616	0.8491	0.9839	0.1625
Q11 excluded	0.8505	0.8404	0.9927	0.1536
Q12 excluded	0.8556	0.8456	0.9893	0.1589
Q13 excluded	0.8392	0.8284	0.9853	0.1427
Q14 excluded	0.8597	0.8483	0.9966	0.1617
Q15 excluded	0.8387	0.8299	0.9923	0.144
Q16 excluded	0.8484	0.8386	0.9917	0.1519
Q17 excluded	0.8497	0.8394	0.9967	0.1527
Q18 excluded	0.8467	0.8369	0.9822	0.1503
Q19 excluded	0.8571	0.8462	0.986	0.1595
Q20 excluded	0.8551	0.8435	0.9875	0.1567
Q21 excluded	0.8583	0.8514	0.9841	0.165
Q22 excluded	0.8389	0.8324	0.9967	0.1462
Q23 excluded	0.8551	0.8456	0.9927	0.1588
Q24 excluded	0.8573	0.849	0.9912	0.1624
Q25 excluded	0.8532	0.8408	0.9865	0.154
Q26 excluded	0.8571	0.8492	0.9857	0.1627
Q27 excluded	0.8569	0.8506	0.9973	0.1641
Q28 excluded	0.8571	0.848	0.9918	0.1613
Q29 excluded	0.8576	0.8496	0.9995	0.1631
Q30 excluded	0.8463	0.8368	0.987	0.1502

Parameters (Session):

par1 = VERDADERO ;

Parameters (R input):

par1 = VERDADERO ;

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

par1 <- 'VERDADERO'
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')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code