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Author

*The author of this computation has been verified*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Tue, 09 Dec 2014 10:12:31 +0000

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/2014/Dec/09/t14181200021vqcwdjtge7vetr.htm/, Retrieved Sun, 19 May 2024 10:11:35 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=264398, Retrieved Sun, 19 May 2024 10:11:35 +0000

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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] [Intrinsic Motivat...] [2010-10-12 11:40:37] [b98453cac15ba1066b407e146608df68]
- RMP   [Cronbach Alpha] [cronbach's alpha 1] [2014-10-15 13:13:48] [6795cd14e59cd8fafcdf800c40b889d9]
-   PD    [Cronbach Alpha] [] [2014-12-08 21:39:24] [6795cd14e59cd8fafcdf800c40b889d9]
-    D      [Cronbach Alpha] [depression intrin...] [2014-12-09 09:59:50] [6795cd14e59cd8fafcdf800c40b889d9]
-    D          [Cronbach Alpha] [EXTR DEPRESSION ] [2014-12-09 10:12:31] [a9a71eb17c5e64a5660208fb3c309b9e] [Current]

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Dataseries X:

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Histogram

Boxplots

4	1	3	4	1	1	4	1	1	1	1	1	1	1
2	2	1	3	4	2	2	2	2	2	1	2	2	1
4	1	2	3	4	2	2	2	2	2	2	2	2	2
4	2	3	5	4	2	5	4	3	2	4	3	2	4
3	2	1	1	2	2	2	2	2	1	2	1	3	2
4	2	2	2	2	2	3	3	3	3	3	3	3	3
4	2	2	4	4	2	2	2	2	2	2	4	3	2
4	4	2	4	4	3	4	3	2	2	2	2	3	2
2	2	2	2	2	2	3	3	4	2	1	2	3	2
4	3	4	2	2	2	3	3	2	2	2	2	2	2
5	2	2	2	1	1	1	3	1	1	1	1	3	1
2	2	2	4	1	2	2	2	2	1	2	2	2	1
4	2	2	2	2	4	4	2	2	2	2	2	2	2
4	2	2	3	1	2	4	2	2	2	2	3	2	2
1	1	1	2	4	1	1	4	1	2	2	2	2	1
5	2	2	4	1	3	5	0	2	4	3	2	2	2
4	5	4	4	4	5	5	3	4	3	4	5	3	4
3	1	2	4	2	2	2	2	4	1	2	2	2	1
4	3	2	4	3	3	3	3	2	1	2	3	4	3
2	3	3	3	3	2	2	2	3	1	2	3	3	3
3	1	2	2	3	2	4	4	2	3	2	2	1	1
4	4	2	4	2	3	4	2	2	2	2	3	1	1
4	3	3	4	2	3	4	2	2	2	2	4	2	2
2	2	2	3	3	2	3	4	2	3	4	1	3	2
4	3	3	4	4	3	3	3	3	3	3	3	3	3
4	3	3	4	4	4	4	4	3	3	3	3	3	3
2	2	2	3	2	2	4	2	2	2	2	2	2	2
2	2	4	2	2	2	2	2	2	2	2	2	2	4
4	1	2	2	2	2	3	2	2	1	2	2	1	1
4	2	3	4	1	1	1	1	1	1	1	1	1	1
4	4	2	4	2	2	4	2	4	2	3	4	2	4
2	2	3	5	4	1	2	3	5	4	3	1	1	5
3	3	2	4	2	2	2	2	2	2	2	2	2	2
5	5	5	5	1	3	5	3	5	2	3	2	2	4
2	4	2	4	4	1	1	2	2	4	2	2	2	2
3	2	1	2	2	2	2	4	1	2	2	2	2	2
5	2	2	4	1	2	4	4	1	2	4	2	3	1
4	2	1	4	2	4	2	3	1	3	2	2	3	2
3	2	2	4	2	2	3	2	2	2	3	2	3	2
2	1	2	2	3	3	1	4	1	4	4	1	3	1
2	1	2	3	1	1	3	1	1	1	1	1	2	1
2	2	2	4	2	2	2	2	2	2	2	2	4	2
5	5	5	5	3	2	4	2	3	2	3	2	3	0
2	1	2	4	1	2	2	1	1	1	1	1	2	1
2	2	3	3	2	2	2	3	3	3	2	3	2	3
5	3	2	4	2	2	3	2	2	2	2	2	2	2
2	1	2	2	2	1	2	2	1	2	2	1	2	1
3	1	1	4	1	2	2	2	2	2	2	2	2	2
5	3	5	4	5	4	4	5	3	3	5	4	5	5
3	2	3	4	2	2	2	4	2	3	4	2	3	2
2	2	2	2	1	1	1	4	1	1	2	1	3	1
2	2	4	2	2	2	3	4	3	4	4	2	2	2
1	1	1	3	1	1	1	1	1	1	1	3	1	2
4	1	3	4	3	1	2	2	4	1	2	3	2	3
2	2	4	2	2	1	1	1	1	1	1	1	3	1
4	2	2	2	4	2	2	4	1	2	4	1	4	1
4	3	2	4	1	2	4	4	2	2	2	4	4	2
2	1	2	2	1	2	2	1	1	1	2	2	2	2
3	1	3	2	2	1	1	2	2	2	2	2	2	2
4	4	2	4	2	2	2	4	2	1	2	2	2	0
2	2	2	3	2	1	2	2	1	2	2	1	2	1
3	3	1	5	3	1	2	3	1	2	1	1	2	1
5	3	4	4	3	3	3	4	3	4	3	2	5	1
2	1	2	3	1	1	2	2	1	1	2	1	2	1
4	4	2	4	2	2	3	3	3	3	2	2	2	2
3	1	1	3	1	1	1	1	2	1	1	2	2	2
2	2	2	2	2	2	3	2	3	3	2	2	2	2
4	1	1	2	4	1	1	3	1	3	3	2	2	1
4	1	5	5	2	2	2	4	1	2	2	4	1	1
2	1	1	1	1	1	1	1	1	1	1	1	1	1
4	2	2	4	4	2	2	2	2	3	2	2	2	2
4	4	2	4	2	1	3	2	4	2	2	2	2	2
3	2	2	4	2	2	2	2	2	2	2	2	2	2
3	2	2	3	3	3	2	3	2	3	4	2	4	2
4	2	2	5	1	1	1	1	1	1	2	1	2	1
4	3	2	4	2	1	2	3	2	2	2	3	1	1
3	3	2	2	4	1	4	2	1	2	2	1	1	1
3	2	2	4	3	2	3	3	2	2	2	2	2	2
4	2	2	4	2	1	3	1	1	1	1	4	2	1
3	1	1	2	1	1	1	1	1	1	1	1	1	1
2	1	1	2	1	1	1	1	1	1	1	1	1	1
3	2	1	1	3	1	2	2	1	1	2	1	2	1
2	1	1	3	2	1	2	1	1	3	2	1	3	1
2	1	2	5	3	2	2	3	1	2	2	2	2	2
3	3	4	4	1	3	3	3	2	2	2	2	2	2
1	3	3	3	4	4	2	3	4	3	3	3	3	3
3	1	2	4	2	2	2	2	3	2	2	3	2	2
4	2	2	2	2	2	2	2	1	1	2	2	2	2
4	2	2	4	3	4	4	2	5	2	3	4	2	5
4	3	1	4	2	1	2	2	2	1	2	4	2	1
4	1	1	5	3	1	3	3	1	2	2	1	2	1
2	2	2	4	2	2	2	2	2	2	2	2	2	2
5	2	2	4	2	3	3	4	4	3	4	2	4	4
4	3	2	4	2	2	2	2	1	2	2	2	2	2
3	2	2	4	2	2	2	1	2	2	1	3	2	2
2	1	1	2	2	2	3	2	1	1	3	2	3	2
4	1	2	4	2	2	3	2	3	2	2	4	2	3
4	1	2	2	1	1	2	2	2	2	2	2	3	2
2	1	2	2	2	1	2	2	2	2	2	2	2	2
4	1	3	1	1	1	2	4	2	2	4	2	3	2
4	3	3	4	3	3	3	2	4	3	2	2	4	2
4	4	3	5	3	2	2	4	3	3	3	3	4	3
2	2	2	4	2	2	2	2	3	2	2	2	2	2
4	2	2	3	2	4	2	4	2	4	4	2	4	2
2	2	1	2	2	1	2	1	1	1	2	2	1	1
4	3	4	2	3	4	3	4	3	2	3	4	1	1
3	3	3	2	3	2	2	3	2	3	2	2	1	2
4	2	2	4	3	2	4	2	2	3	2	2	3	2
2	1	1	1	1	1	1	2	1	2	2	1	2	1
3	2	1	4	3	2	2	3	1	2	2	2	3	1
2	1	1	2	4	1	1	4	1	2	2	1	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	'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=264398&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=264398&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264398&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	'Gertrude Mary Cox' @ cox.wessa.net

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.8615	0.864	0.8896	0.3121
Q1 excluded	0.8563	0.8591	0.8831	0.3193
Q3 excluded	0.85	0.8534	0.8794	0.3093
Q5 excluded	0.8522	0.8553	0.8831	0.3125
Q11 excluded	0.8604	0.8624	0.8872	0.3253
Q13 excluded	0.8587	0.8608	0.8859	0.3224
Q15 excluded	0.8441	0.8461	0.8734	0.2972
Q20 excluded	0.8497	0.853	0.878	0.3085
Q21 excluded	0.8554	0.8573	0.8803	0.316
Q22 excluded	0.8459	0.8492	0.8731	0.3023
Q23 excluded	0.8529	0.8552	0.8799	0.3125
Q25 excluded	0.8471	0.8486	0.8714	0.3013
Q26 excluded	0.8522	0.8555	0.8808	0.3129
Q34 excluded	0.8576	0.8604	0.8849	0.3217
Q35 excluded	0.8499	0.8527	0.8754	0.3081

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8615 & 0.864 & 0.8896 & 0.3121 \tabularnewline
Q1 excluded & 0.8563 & 0.8591 & 0.8831 & 0.3193 \tabularnewline
Q3 excluded & 0.85 & 0.8534 & 0.8794 & 0.3093 \tabularnewline
Q5 excluded & 0.8522 & 0.8553 & 0.8831 & 0.3125 \tabularnewline
Q11 excluded & 0.8604 & 0.8624 & 0.8872 & 0.3253 \tabularnewline
Q13 excluded & 0.8587 & 0.8608 & 0.8859 & 0.3224 \tabularnewline
Q15 excluded & 0.8441 & 0.8461 & 0.8734 & 0.2972 \tabularnewline
Q20 excluded & 0.8497 & 0.853 & 0.878 & 0.3085 \tabularnewline
Q21 excluded & 0.8554 & 0.8573 & 0.8803 & 0.316 \tabularnewline
Q22 excluded & 0.8459 & 0.8492 & 0.8731 & 0.3023 \tabularnewline
Q23 excluded & 0.8529 & 0.8552 & 0.8799 & 0.3125 \tabularnewline
Q25 excluded & 0.8471 & 0.8486 & 0.8714 & 0.3013 \tabularnewline
Q26 excluded & 0.8522 & 0.8555 & 0.8808 & 0.3129 \tabularnewline
Q34 excluded & 0.8576 & 0.8604 & 0.8849 & 0.3217 \tabularnewline
Q35 excluded & 0.8499 & 0.8527 & 0.8754 & 0.3081 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=264398&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]0.8615[/C][C]0.864[/C][C]0.8896[/C][C]0.3121[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.8563[/C][C]0.8591[/C][C]0.8831[/C][C]0.3193[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.85[/C][C]0.8534[/C][C]0.8794[/C][C]0.3093[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.8522[/C][C]0.8553[/C][C]0.8831[/C][C]0.3125[/C][/ROW]
[ROW][C]Q11 excluded[/C][C]0.8604[/C][C]0.8624[/C][C]0.8872[/C][C]0.3253[/C][/ROW]
[ROW][C]Q13 excluded[/C][C]0.8587[/C][C]0.8608[/C][C]0.8859[/C][C]0.3224[/C][/ROW]
[ROW][C]Q15 excluded[/C][C]0.8441[/C][C]0.8461[/C][C]0.8734[/C][C]0.2972[/C][/ROW]
[ROW][C]Q20 excluded[/C][C]0.8497[/C][C]0.853[/C][C]0.878[/C][C]0.3085[/C][/ROW]
[ROW][C]Q21 excluded[/C][C]0.8554[/C][C]0.8573[/C][C]0.8803[/C][C]0.316[/C][/ROW]
[ROW][C]Q22 excluded[/C][C]0.8459[/C][C]0.8492[/C][C]0.8731[/C][C]0.3023[/C][/ROW]
[ROW][C]Q23 excluded[/C][C]0.8529[/C][C]0.8552[/C][C]0.8799[/C][C]0.3125[/C][/ROW]
[ROW][C]Q25 excluded[/C][C]0.8471[/C][C]0.8486[/C][C]0.8714[/C][C]0.3013[/C][/ROW]
[ROW][C]Q26 excluded[/C][C]0.8522[/C][C]0.8555[/C][C]0.8808[/C][C]0.3129[/C][/ROW]
[ROW][C]Q34 excluded[/C][C]0.8576[/C][C]0.8604[/C][C]0.8849[/C][C]0.3217[/C][/ROW]
[ROW][C]Q35 excluded[/C][C]0.8499[/C][C]0.8527[/C][C]0.8754[/C][C]0.3081[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=264398&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=264398&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	0.8615	0.864	0.8896	0.3121
Q1 excluded	0.8563	0.8591	0.8831	0.3193
Q3 excluded	0.85	0.8534	0.8794	0.3093
Q5 excluded	0.8522	0.8553	0.8831	0.3125
Q11 excluded	0.8604	0.8624	0.8872	0.3253
Q13 excluded	0.8587	0.8608	0.8859	0.3224
Q15 excluded	0.8441	0.8461	0.8734	0.2972
Q20 excluded	0.8497	0.853	0.878	0.3085
Q21 excluded	0.8554	0.8573	0.8803	0.316
Q22 excluded	0.8459	0.8492	0.8731	0.3023
Q23 excluded	0.8529	0.8552	0.8799	0.3125
Q25 excluded	0.8471	0.8486	0.8714	0.3013
Q26 excluded	0.8522	0.8555	0.8808	0.3129
Q34 excluded	0.8576	0.8604	0.8849	0.3217
Q35 excluded	0.8499	0.8527	0.8754	0.3081

Parameters (Session):

par1 = 1 2 3 4 5 ;

Parameters (R input):

par1 = 1 2 3 4 5 ;

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