Repository of Reproducible Computations

Free Statistics

of Irreproducible Research!

Author's title

Author

*The author of this computation has been verified*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Mon, 20 Dec 2010 22:26:52 +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/2010/Dec/20/t12928839045befh2fm1vdp1aj.htm/, Retrieved Sun, 15 Feb 2026 03:06:16 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=113157, Retrieved Sun, 15 Feb 2026 03:06:16 +0000

QR Codes:

Paste this QR Code to cite your computation.

Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

393

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 11:46:14] [b98453cac15ba1066b407e146608df68]
-    D  [Cronbach Alpha] [WS3 - Task 2- Ext...] [2010-10-19 17:10:12] [19f9551d4d95750ef21e9f3cf8fe2131]
- R  D    [Cronbach Alpha] [p_Stress_CA1Bel] [2010-12-04 09:09:44] [19f9551d4d95750ef21e9f3cf8fe2131]
-    D      [Cronbach Alpha] [p_Stress_CA2Verwa...] [2010-12-04 09:17:09] [19f9551d4d95750ef21e9f3cf8fe2131]
-    D        [Cronbach Alpha] [p_Stress_CA3Dep] [2010-12-04 10:17:30] [19f9551d4d95750ef21e9f3cf8fe2131]
-    D            [Cronbach Alpha] [p_Stress_CA3Depv2] [2010-12-20 22:26:52] [fca744d17b21beb005bf086e7071b2bb] [Current]

Feedback Forum

Post a new message

Dataseries X:

Download CSV

Histogram

Boxplots

1	1	2	2	1	3	2
1	1	1	3	1	2	2
1	1	2	2	3	3	2
2	1	2	1	2	3	1
2	2	3	3	3	5	3
1	1	2	2	2	2	2
3	4	4	1	3	4	3
1	1	2	1	2	3	1
1	1	1	2	2	2	1
1	2	1	2	2	3	2
1	1	1	1	1	2	3
1	1	1	1	1	2	1
1	2	3	2	3	3	1
1	1	1	2	2	2	1
2	1	2	1	3	3	2
2	1	2	2	1	3	3
1	1	1	2	1	2	3
1	1	1	2	2	2	1
1	2	1	1	1	3	4
1	1	1	1	0	2	1
1	1	2	2	2	3	1
2	2	2	2	2	2	2
1	1	1	1	1	3	3
1	1	1	1	2	2	1
1	1	1	2	2	2	2
1	2	1	2	3	3	3
3	1	2	1	1	3	2
1	1	1	1	2	2	1
1	2	2	3	1	3	3
1	1	2	2	1	2	1
1	1	1	2	1	3	2
1	1	2	1	2	3	3
1	1	1	1	1	2	1
3	2	2	3	2	4	4
2	1	2	1	2	2	2
1	1	1	2	2	2	1
1	1	1	2	1	3	1
2	1	1	1	1	2	1
2	1	2	1	3	2	3
1	1	1	1	1	2	1
1	1	1	2	2	3	1
2	1	2	2	1	3	2
1	1	1	2	2	3	1
1	1	2	2	1	2	2
1	1	2	1	1	3	1
2	1	2	2	3	3	1
2	2	3	4	3	2	2
1	2	2	2	2	3	2
1	1	1	1	3	2	2
2	1	1	3	2	3	0
1	1	2	3	2	3	1
1	2	1	1	1	2	1
1	1	1	1	1	2	3
1	1	2	3	3	3	2
3	2	3	2	3	4	3
1	1	2	3	2	2	1
2	1	2	3	1	2	1
1	1	2	3	2	4	1
1	1	2	2	2	3	2
1	1	2	1	1	3	2
2	2	2	3	2	4	2
1	1	1	3	1	2	3
1	1	2	3	2	3	1
2	2	2	2	2	3	1
2	1	2	1	2	3	2
1	1	2	2	4	3	2
1	1	1	3	3	3	1
1	1	2	1	1	2	2
1	1	1	2	2	2	2
1	2	2	1	2	3	2
2	2	3	2	2	4	2
2	1	1	2	2	2	3
1	1	1	1	2	2	1
3	1	2	1	1	2	1
1	1	1	3	1	2	1
1	1	1	2	1	2	1
1	1	2	1	4	2	1
1	1	3	2	2	2	1
1	1	1	2	2	2	4
1	1	2	1	3	3	2
2	3	3	3	4	3	4
1	1	2	2	1	2	4
2	1	2	1	3	3	3
2	1	2	1	1	3	3
2	1	2	2	2	4	2
1	1	0	2	1	2	3
1	1	2	1	1	2	3
2	1	2	2	3	3	3
1	1	1	2	2	2	2
1	1	2	2	2	2	1
1	1	2	1	2	2	1
1	1	2	1	2	2	1
2	2	2	3	2	2	3
1	1	1	2	2	3	2
1	1	1	1	1	2	4
2	1	2	3	2	2	4
3	2	3	2	3	3	3
1	1	1	2	2	2	2
3	2	2	2	1	4	1
3	3	3	3	4	4	4
2	2	2	2	2	3	1
2	2	2	2	2	3	2
2	1	1	1	1	3	2
3	1	2	1	2	2	4
2	1	1	2	2	2	2
1	1	1	1	3	2	1
1	1	2	2	2	4	2
1	1	1	1	2	2	1
1	1	1	3	4	2	3
2	2	3	3	1	3	1
2	1	1	2	2	3	3
1	1	1	1	2	2	3
1	1	1	1	1	2	1
2	1	1	1	1	3	2
1	1	1	1	1	2	1
1	1	1	1	1	2	3
1	1	1	2	2	2	2
2	1	1	1	2	3	3
1	2	1	1	1	3	2
3	2	2	3	3	3	4
1	1	1	2	2	2	1
2	1	2	1	3	2	1
1	1	2	2	3	2	3
4	4	4	3	2	4	2
2	1	2	2	2	3	2
2	2	2	2	2	3	3
1	1	1	1	2	2	3
1	1	1	2	2	2	3
1	1	1	4	1	2	4
1	1	1	1	3	3	2
1	1	2	2	2	3	1
2	1	1	2	2	2	1
1	1	2	1	3	2	2
1	1	1	1	3	3	3
2	2	3	1	1	4	4
1	1	1	2	2	2	2
1	1	1	2	2	2	3
2	3	3	2	2	5	2
2	1	2	1	3	3	3
2	1	1	2	1	3	4
1	1	1	2	2	2	2
1	1	1	1	2	2	1

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	2 seconds
R Server	'George Udny Yule' @ 72.249.76.132

\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 & 2 seconds \tabularnewline
R Server & 'George Udny Yule' @ 72.249.76.132 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=113157&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]2 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'George Udny Yule' @ 72.249.76.132[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=113157&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=113157&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	2 seconds
R Server	'George Udny Yule' @ 72.249.76.132

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.7021	0.7371	0.7412	0.286
Q31_1 excluded	0.6387	0.6799	0.6793	0.2614
Q31_2 excluded	0.6278	0.6571	0.6553	0.2421
Q31_3 excluded	0.6199	0.6599	0.6499	0.2444
Q31_4 excluded	0.7077	0.748	0.7474	0.331
Q31_5 excluded	0.7022	0.7415	0.7401	0.3234
Q31_6 excluded	0.6393	0.6803	0.6833	0.2618
Q31_7 excluded	0.7368	0.7541	0.7485	0.3382

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7021 & 0.7371 & 0.7412 & 0.286 \tabularnewline
Q31_1 excluded & 0.6387 & 0.6799 & 0.6793 & 0.2614 \tabularnewline
Q31_2 excluded & 0.6278 & 0.6571 & 0.6553 & 0.2421 \tabularnewline
Q31_3 excluded & 0.6199 & 0.6599 & 0.6499 & 0.2444 \tabularnewline
Q31_4 excluded & 0.7077 & 0.748 & 0.7474 & 0.331 \tabularnewline
Q31_5 excluded & 0.7022 & 0.7415 & 0.7401 & 0.3234 \tabularnewline
Q31_6 excluded & 0.6393 & 0.6803 & 0.6833 & 0.2618 \tabularnewline
Q31_7 excluded & 0.7368 & 0.7541 & 0.7485 & 0.3382 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=113157&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]0.7021[/C][C]0.7371[/C][C]0.7412[/C][C]0.286[/C][/ROW]
[ROW][C]Q31_1 excluded[/C][C]0.6387[/C][C]0.6799[/C][C]0.6793[/C][C]0.2614[/C][/ROW]
[ROW][C]Q31_2 excluded[/C][C]0.6278[/C][C]0.6571[/C][C]0.6553[/C][C]0.2421[/C][/ROW]
[ROW][C]Q31_3 excluded[/C][C]0.6199[/C][C]0.6599[/C][C]0.6499[/C][C]0.2444[/C][/ROW]
[ROW][C]Q31_4 excluded[/C][C]0.7077[/C][C]0.748[/C][C]0.7474[/C][C]0.331[/C][/ROW]
[ROW][C]Q31_5 excluded[/C][C]0.7022[/C][C]0.7415[/C][C]0.7401[/C][C]0.3234[/C][/ROW]
[ROW][C]Q31_6 excluded[/C][C]0.6393[/C][C]0.6803[/C][C]0.6833[/C][C]0.2618[/C][/ROW]
[ROW][C]Q31_7 excluded[/C][C]0.7368[/C][C]0.7541[/C][C]0.7485[/C][C]0.3382[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=113157&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=113157&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	0.7021	0.7371	0.7412	0.286
Q31_1 excluded	0.6387	0.6799	0.6793	0.2614
Q31_2 excluded	0.6278	0.6571	0.6553	0.2421
Q31_3 excluded	0.6199	0.6599	0.6499	0.2444
Q31_4 excluded	0.7077	0.748	0.7474	0.331
Q31_5 excluded	0.7022	0.7415	0.7401	0.3234
Q31_6 excluded	0.6393	0.6803	0.6833	0.2618
Q31_7 excluded	0.7368	0.7541	0.7485	0.3382

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