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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

Tue, 12 Oct 2010 11:46:14 +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/Oct/12/t12868838946ftgfi10xhhyw0i.htm/, Retrieved Sun, 28 Apr 2024 21:58:50 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=82858, Retrieved Sun, 28 Apr 2024 21:58:50 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

889

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] [d76b387543b13b5e3afd8ff9e5fdc89f] [Current]
-    D    [Cronbach Alpha] [Extrinsic motivat...] [2010-10-15 08:57:23] [aeb27d5c05332f2e597ad139ee63fbe4] 
-    D    [Cronbach Alpha] [Cronbach A - EM E...] [2010-10-15 08:58:16] [56d90b683fcd93137645f9226b43c62b] 
-    D    [Cronbach Alpha] [Extrinsic motivat...] [2010-10-15 09:03:32] [c7506ced21a6c0dca45d37c8a93c80e0] 
-           [Cronbach Alpha] [internal validity 1] [2010-10-16 12:38:55] [6ff9fb24bdca608d2f4f1f9db3f6445e] 
F    D        [Cronbach Alpha] [internal validity 2] [2010-10-16 12:42:51] [6ff9fb24bdca608d2f4f1f9db3f6445e] 
F    D          [Cronbach Alpha] [internal validity 3] [2010-10-16 12:44:58] [6ff9fb24bdca608d2f4f1f9db3f6445e] 
F    D      [Cronbach Alpha] [] [2010-10-19 07:17:16] [dc30d19c3bc2be07fe595ad36c2cf923] 
-    D    [Cronbach Alpha] [Extrinsic 1 - Cro...] [2010-10-15 09:11:43] [4a7069087cf9e0eda253aeed7d8c30d6] 
-    D      [Cronbach Alpha] [Extrinsic 2 - Cro...] [2010-10-15 09:12:44] [4a7069087cf9e0eda253aeed7d8c30d6] 
-    D        [Cronbach Alpha] [Extrinsic 3 - Cro...] [2010-10-15 09:13:31] [4a7069087cf9e0eda253aeed7d8c30d6] 
-    D    [Cronbach Alpha] [Extrinsic motivat...] [2010-10-15 09:25:56] [afe9379cca749d06b3d6872e02cc47ed] 
-    D      [Cronbach Alpha] [Extrinsic motivat...] [2010-10-15 09:29:15] [afe9379cca749d06b3d6872e02cc47ed] 
-    D        [Cronbach Alpha] [Extrinsic motivat...] [2010-10-15 09:30:43] [afe9379cca749d06b3d6872e02cc47ed] 
- R             [Cronbach Alpha] [Extrinsic moticat...] [2012-10-15 14:38:45] [74be16979710d4c4e7c6647856088456] 
- R           [Cronbach Alpha] [Extrinsic motivat...] [2012-10-15 14:36:21] [74be16979710d4c4e7c6647856088456] 
- R         [Cronbach Alpha] [Extrinsic motivat...] [2012-10-14 19:45:45] [e6a888b30739f946c01ecef17ea767f7] 
- R         [Cronbach Alpha] [Cronbach Alfa ide...] [2012-10-16 09:34:44] [87b90d598c60c012567ac118c8f3a654] 
-  M          [Cronbach Alpha] [WS 3 - Q 2.1] [2012-10-16 10:02:26] [0604709baf8ca89a71bc0fcadc3cdffd] 
-    D        [Cronbach Alpha] [WS 3 - Q 2.3] [2012-10-16 10:07:26] [0604709baf8ca89a71bc0fcadc3cdffd] 
- RMPD      [Testing Mean with unknown Variance - Critical Value] [WS 4 Q 2.1] [2012-10-22 17:46:14] [8c30f4dd45e15fd207e4faf2fdf6253e] 
-             [Testing Mean with unknown Variance - Critical Value] [1-sample t-test (...] [2012-12-17 18:49:07] [7dcdf88f8d4909016d1a598b3c226ce5] 
- R  D          [Testing Mean with unknown Variance - Critical Value] [Tweezijdig test -...] [2012-12-17 19:38:37] [7dcdf88f8d4909016d1a598b3c226ce5] 
-    D    [Cronbach Alpha] [Taak 2 - Extr.3] [2010-10-15 11:59:33] [c289bfbb56808c5d93a0f55b5d39f5bd] 
F    D    [Cronbach Alpha] [Task 2.3] [2010-10-15 12:02:26] [39c51da0be01189e8a44eb69e891b7a1] 
-    D    [Cronbach Alpha] [] [2010-10-15 15:39:12] [39e83c7b0ac936e906a817a1bb402750] 
-    D      [Cronbach Alpha] [] [2010-10-15 15:42:05] [39e83c7b0ac936e906a817a1bb402750] 
-    D        [Cronbach Alpha] [] [2010-10-15 15:44:32] [39e83c7b0ac936e906a817a1bb402750] 
-    D    [Cronbach Alpha] [Extrinsic motivat...] [2010-10-16 09:38:38] [033eb2749a430605d9b2be7c4aac4a0c] 
-    D    [Cronbach Alpha] [WS3 Task2 c] [2010-10-16 11:16:28] [1fd136673b2a4fecb5c545b9b4a05d64] 
- RM        [Cronbach Alpha] [] [2011-10-18 16:59:21] [74be16979710d4c4e7c6647856088456] 
-    D    [Cronbach Alpha] [Cronbach extrinsi...] [2010-10-16 12:56:28] [74be16979710d4c4e7c6647856088456] 
-           [Cronbach Alpha] [Cronbach extrinsi...] [2010-10-17 11:08:43] [65eb19f81eab2b6e672eafaed2a27190] 
-    D    [Cronbach Alpha] [Question 2: extri...] [2010-10-16 14:20:07] [62f7c80c4d96454bbd2b2b026ea9aad9] 
-    D    [Cronbach Alpha] [Extrinsic  3 - Ex...] [2010-10-16 14:33:26] [48146708a479232c43a8f6e52fbf83b4] 
-    D    [Cronbach Alpha] [Cronbach's alfa: ...] [2010-10-16 15:11:14] [bd591a1ebb67d263a02e7adae3fa1a4d] 
F    D    [Cronbach Alpha] [Cronbach's alfa: ...] [2010-10-16 15:24:08] [bd591a1ebb67d263a02e7adae3fa1a4d] 
-    D      [Cronbach Alpha] [Cronbach's alfa: ...] [2010-10-16 15:28:31] [bd591a1ebb67d263a02e7adae3fa1a4d] 
-         [Cronbach Alpha] [Question 2 result 3] [2010-10-16 17:41:02] [74be16979710d4c4e7c6647856088456] 
-    D    [Cronbach Alpha] [Ext3 Cronbach's α] [2010-10-16 17:48:14] [504b6ff240ec7a3fcbc007044ae7a0bb] 
F    D    [Cronbach Alpha] [extr.3] [2010-10-17 08:47:35] [c1605865773cc027e55b238d879a644c] 
-    D    [Cronbach Alpha] [] [2010-10-17 13:29:30] [22937c5b58c14f6c22964f32d64ff823] 
-    D    [Cronbach Alpha] [Task 2: Extrinsic...] [2010-10-17 14:21:26] [6ca0fc48dd5333d51a15728999009c83] 
-           [Cronbach Alpha] [ws3.1.2 external] [2010-10-19 11:39:06] [e4076051fbfb461c886b1e223cd7862f] 
-             [Cronbach Alpha] [] [2010-10-19 19:21:36] [76e72a1b37cce9a27058d2e4927e5bf5] 
-    D        [Cronbach Alpha] [ws3 oef 2] [2010-10-19 21:05:11] [5278e0a58c5de897b31ce79607e774d7] 
-    D        [Cronbach Alpha] [] [2010-10-19 23:24:39] [93b680a2d8d992e1eb89148dafc4c61c] 
- R             [Cronbach Alpha] [WS3 T2"] [2011-10-16 17:48:20] [91ce4971c808115c699d50336245df56] 
-    D    [Cronbach Alpha] [extrinsic motivat...] [2010-10-17 14:42:14] [95e8426e0df851c9330605aa1e892ab5] 

[Truncated]

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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	'RServer@AstonUniversity' @ vre.aston.ac.uk

\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 & 'RServer@AstonUniversity' @ vre.aston.ac.uk \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=82858&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]'RServer@AstonUniversity' @ vre.aston.ac.uk[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=82858&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=82858&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	'RServer@AstonUniversity' @ vre.aston.ac.uk

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.8414	0.8407	0.816	0.5688
Q4 excluded	0.8486	0.8494	0.8053	0.6528
Q11 excluded	0.7684	0.7684	0.6944	0.5252
Q18 excluded	0.7564	0.7556	0.6793	0.5075
Q25 excluded	0.8133	0.8117	0.7744	0.5897

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8414 & 0.8407 & 0.816 & 0.5688 \tabularnewline
Q4 excluded & 0.8486 & 0.8494 & 0.8053 & 0.6528 \tabularnewline
Q11 excluded & 0.7684 & 0.7684 & 0.6944 & 0.5252 \tabularnewline
Q18 excluded & 0.7564 & 0.7556 & 0.6793 & 0.5075 \tabularnewline
Q25 excluded & 0.8133 & 0.8117 & 0.7744 & 0.5897 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=82858&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]0.8414[/C][C]0.8407[/C][C]0.816[/C][C]0.5688[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.8486[/C][C]0.8494[/C][C]0.8053[/C][C]0.6528[/C][/ROW]
[ROW][C]Q11 excluded[/C][C]0.7684[/C][C]0.7684[/C][C]0.6944[/C][C]0.5252[/C][/ROW]
[ROW][C]Q18 excluded[/C][C]0.7564[/C][C]0.7556[/C][C]0.6793[/C][C]0.5075[/C][/ROW]
[ROW][C]Q25 excluded[/C][C]0.8133[/C][C]0.8117[/C][C]0.7744[/C][C]0.5897[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=82858&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=82858&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	0.8414	0.8407	0.816	0.5688
Q4 excluded	0.8486	0.8494	0.8053	0.6528
Q11 excluded	0.7684	0.7684	0.6944	0.5252
Q18 excluded	0.7564	0.7556	0.6793	0.5075
Q25 excluded	0.8133	0.8117	0.7744	0.5897

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')

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Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code