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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_cronbach.wasp
Title produced by softwareCronbach Alpha
Date of computationTue, 18 Oct 2011 08:30:46 -0400
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2011/Oct/18/t1318941256j8t7qy3htb7h61i.htm/, Retrieved Sun, 28 Apr 2024 21:30:06 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=131760, Retrieved Sun, 28 Apr 2024 21:30:06 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact288

Tree of Dependent Computations

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]
- R  D  [Cronbach Alpha] [] [2011-10-18 12:27:58] [b98453cac15ba1066b407e146608df68]
-    D    [Cronbach Alpha] [] [2011-10-18 12:29:27] [b98453cac15ba1066b407e146608df68]
-    D        [Cronbach Alpha] [] [2011-10-18 12:30:46] [d76b387543b13b5e3afd8ff9e5fdc89f] [Current]
- R             [Cronbach Alpha] [] [2011-10-25 13:46:35] [19d77e37efa419fdc040c74a96874aff]
- RM            [Cronbach Alpha] [] [2012-11-06 20:55:41] [ec67509cb0a58a77552cc42e4bdf733e]
- R             [Cronbach Alpha] [Cronbach Alpha 3] [2012-12-14 16:01:53] [4bcde15d59f799c0000a3f03b8626620]
- R             [Cronbach Alpha] [Paper-CA-EM3] [2012-12-14 22:14:45] [8a32126242ff0300e413cfb1e4cb76da]
- RM            [Cronbach Alpha] [] [2012-12-15 14:52:38] [147786ccb76fa00e429d4b9f5f28b291]
- RM D          [Percentiles] [] [2012-12-15 15:51:48] [147786ccb76fa00e429d4b9f5f28b291]
- RM D          [Tukey lambda PPCC Plot] [] [2012-12-15 16:08:36] [147786ccb76fa00e429d4b9f5f28b291]
- RM              [Skewness and Kurtosis Test] [] [2012-12-15 16:39:03] [147786ccb76fa00e429d4b9f5f28b291]
- RM D          [Skewness and Kurtosis Test] [] [2012-12-15 16:09:27] [147786ccb76fa00e429d4b9f5f28b291]
- R             [Cronbach Alpha] [paper cron 3] [2012-12-15 23:05:15] [d62edeb088184451220eb2cef2f7c077]
- R             [Cronbach Alpha] [1.6.3 Cronbach Al...] [2012-12-16 11:32:32] [ed906dce46ddef36a6228cf206971146]
- R             [Cronbach Alpha] [] [2012-12-17 18:27:09] [edf0418499cd31d27dbea8ea1d30b3db]
-  M              [Cronbach Alpha] [deel 1 cronbach a...] [2012-12-20 17:07:48] [885d0a915dae889a27a534b235a2244f]
- RM            [Cronbach Alpha] [] [2014-10-15 08:27:10] [eee95947b6243a1febfcd5f41483d733]
- RMP           [Cronbach Alpha] [] [2014-10-15 11:00:12] [394a9522c47495260fca596e959e6202]
- RM            [Cronbach Alpha] [Cronbach Alpha E3] [2014-10-15 11:26:52] [508ad00fbaced7ad8e80ddb3167ea0fd]
- RM            [Cronbach Alpha] [E3 Cronbach Alpha] [2014-10-15 11:40:51] [56d77bf8347cfd1e104fa9098ce46dbd]
- RM            [Cronbach Alpha] [WS3 Question 2] [2014-10-15 12:25:27] [f13ab2b9cdb9c17a0cf473fdf5cac3ab]
- RMP             [Cronbach Alpha] [paper] [2014-12-12 11:41:51] [074b0dbc8d3b700fa15927150828e345]
- RMPD            [Cronbach Alpha] [paper] [2014-12-12 11:43:58] [074b0dbc8d3b700fa15927150828e345]
- RMPD            [Cronbach Alpha] [paper] [2014-12-12 11:44:50] [074b0dbc8d3b700fa15927150828e345]
- RMPD            [Cronbach Alpha] [paper] [2014-12-12 11:45:27] [074b0dbc8d3b700fa15927150828e345]
- RMPD            [Cronbach Alpha] [paper] [2014-12-12 11:46:07] [074b0dbc8d3b700fa15927150828e345]
- RMPD            [Cronbach Alpha] [paper] [2014-12-12 11:46:46] [074b0dbc8d3b700fa15927150828e345]
- RMPD            [Cronbach Alpha] [paper] [2014-12-12 11:48:03] [074b0dbc8d3b700fa15927150828e345]
- RMPD            [Cronbach Alpha] [paper] [2014-12-12 11:58:41] [074b0dbc8d3b700fa15927150828e345]
- RMP           [Cronbach Alpha] [WS3-task2E3] [2014-10-15 12:28:00] [81f624c2f0b20a2549c93e7c3dccf981]
- RM            [Cronbach Alpha] [WS3 task2cc] [2014-10-15 12:43:22] [46c7ebd23dbdec306a09830d8b7528e7]
- RM            [Cronbach Alpha] [ws3] [2014-10-15 12:50:55] [bcd8153d44f369b7624d3c1b4621c4c3]
- RMP           [Cronbach Alpha] [Kendall] [2014-10-15 12:55:05] [6795cd14e59cd8fafcdf800c40b889d9]
- RMP           [Cronbach Alpha] [E3] [2014-10-15 13:24:28] [36781f05c04c55e165b348994b753b95]
-  M              [Cronbach Alpha] [] [2014-12-23 09:27:05] [1601e79f56036968990446024a6397e5]
- RM            [Cronbach Alpha] [] [2014-10-15 13:26:28] [eee95947b6243a1febfcd5f41483d733]
- RMP           [Cronbach Alpha] [Q2] [2014-10-15 13:27:12] [bcf5edf18529a33bd1494456d2c6cb9a]
- RMP           [Cronbach Alpha] [E3] [2014-10-15 13:33:16] [2ba32e9656c7c3fdddad3ba3f1588288]
- RM            [Cronbach Alpha] [3] [2014-10-15 13:35:08] [e3727f74ca0896859afbe865e40a3465]
- RMP           [Cronbach Alpha] [] [2014-10-15 13:35:17] [b2fe7fef0850359c2a41ad606a8f04c2]
- RMP           [Cronbach Alpha] [Question 2 WS3 3] [2014-10-15 13:35:56] [6795cd14e59cd8fafcdf800c40b889d9]
- RMP           [Cronbach Alpha] [] [2014-10-15 13:39:24] [fda96889f4ef6d31c0c28fd64d281011]
- RM            [Cronbach Alpha] [] [2014-10-15 13:55:13] [63554e339c9381d8e23ab848f4176daf]
- RM            [Cronbach Alpha] [E3] [2014-10-15 13:58:44] [ae96d02647dd9ad9c105f1fa6642e295]
- RMP           [Cronbach Alpha] [WS3 Question 2.2] [2014-10-15 14:30:52] [ce9f16fa58bb2303d66047ab4343b505]
- RM            [Cronbach Alpha] [WS3 SHW] [2014-10-15 14:45:54] [cac6c5fb035463be46c296b46e439cb5]
- RM            [Cronbach Alpha] [] [2014-10-15 15:20:32] [2b9d0c54c8c845c625e475ed5f1f3af1]
- RMP           [Cronbach Alpha] [] [2014-10-15 15:42:25] [dacad244957cb51472792888970d4390]
- RM            [Cronbach Alpha] [WSH 3, Task 2c] [2014-10-15 15:43:30] [e7da31d1eb6eab8d5ed70d87d07c747b]
- RM            [Cronbach Alpha] [] [2014-10-15 16:50:29] [bca3c6529212edfac3e771806c79a908]
- RM            [Cronbach Alpha] [] [2014-10-15 17:03:11] [261f60062b6e70d0e3f72a6ad4f04654]

[Truncated]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
4	7	5	7
5	5	5	5
4	6	5	5
3	6	6	6
6	6	6	6
5	5	5	7
5	7	5	6
1	6	6	7
4	7	7	7
5	6	6	6
6	7	7	7
7	7	6	7
5	6	6	5
6	6	6	6
5	7	6	7
4	6	6	6
7	7	7	7
7	7	7	7
6	7	7	7
6	7	6	6
2	5	5	4
7	7	7	7
5	5	5	6
4	6	7	7
7	7	6	7
1	6	2	5
1	6	2	5
7	6	7	7
4	6	4	6
5	6	4	6
5	6	5	6
5	5	5	6
4	3	4	1
5	3	7	5
5	5	7	7
4	6	4	5
7	7	7	7
7	7	4	5
7	7	6	7
4	6	6	6
7	7	6	7
7	7	6	6
4	6	6	6
3	6	7	5
2	5	6	6
6	6	6	6
4	6	4	5
5	7	7	7
4	6	6	6
7	7	7	7
4	6	6	5
6	5	7	5
7	7	7	7
1	4	2	3
5	7	6	6
4	5	6	6
5	6	5	5
5	7	6	6
5	7	6	6
5	7	6	7
5	7	6	7
5	6	6	6
6	6	4	5
3	6	3	4
4	4	4	5
6	6	7	6
6	6	6	6
3	7	6	7
5	7	7	6
2	7	7	7
7	7	7	7
7	7	5	7
4	6	6	6
6	5	3	5
6	7	6	7
3	5	5	5
3	5	5	5
6	7	6	6
7	7	6	7
3	2	4	3
1	6	4	4
5	6	5	5
5	6	6	6
5	6	5	6
5	5	5	6
6	6	6	6
6	7	7	7
5	5	5	7
7	7	7	7
6	6	7	7
1	5	2	2
3	6	5	5
5	7	4	6
1	7	7	6
6	6	6	6
4	7	7	7
5	6	5	5
5	5	5	5
6	5	4	6
5	6	7	6
5	6	5	7
4	6	4	4
6	6	6	6
6	6	6	6
4	5	5	5
5	5	5	5
5	5	3	5
2	7	5	6
7	7	6	7
5	6	6	6
5	7	7	7
2	7	7	7
3	4	5	5
5	5	5	6
5	7	6	7
5	7	4	7
6	7	7	7
6	6	5	7
4	5	6	5
6	7	7	7
3	4	7	7
6	6	6	6
4	6	6	5
3	3	4	5
4	7	7	7
6	6	6	7
4	7	5	6
6	6	6	6
5	5	5	6
5	6	5	6
5	6	6	6
3	7	6	6
5	6	4	5
4	7	6	6
5	6	7	7
5	6	6	6
1	7	7	7
4	7	7	7
7	7	6	6
4	7	5	6
6	6	5	7
7	7	5	5
6	7	7	5
5	6	3	6
6	7	6	7
5	6	5	5
5	7	7	7
6	6	4	5
5	5	6	6
3	4	4	5
6	7	6	7
7	7	7	7
4	5	4	5
5	7	6	7
4	6	7	6
5	5	5	6
2	6	6	6
7	7	4	7
5	7	4	6
4	6	6	5
2	5	4	5
4	6	3	5

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 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=131760&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=131760&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=131760&T=0

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'Gertrude Mary Cox' @ cox.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.74160.77060.74010.4565
Q1 excluded0.77670.78370.73030.5471
Q8 excluded0.68420.71680.65530.4576
Q15 excluded0.67740.720.65420.4616
Q22 excluded0.60230.62770.53130.3598

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7416 & 0.7706 & 0.7401 & 0.4565 \tabularnewline
Q1 excluded & 0.7767 & 0.7837 & 0.7303 & 0.5471 \tabularnewline
Q8 excluded & 0.6842 & 0.7168 & 0.6553 & 0.4576 \tabularnewline
Q15 excluded & 0.6774 & 0.72 & 0.6542 & 0.4616 \tabularnewline
Q22 excluded & 0.6023 & 0.6277 & 0.5313 & 0.3598 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=131760&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]0.7416[/C][C]0.7706[/C][C]0.7401[/C][C]0.4565[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.7767[/C][C]0.7837[/C][C]0.7303[/C][C]0.5471[/C][/ROW]
[ROW][C]Q8 excluded[/C][C]0.6842[/C][C]0.7168[/C][C]0.6553[/C][C]0.4576[/C][/ROW]
[ROW][C]Q15 excluded[/C][C]0.6774[/C][C]0.72[/C][C]0.6542[/C][C]0.4616[/C][/ROW]
[ROW][C]Q22 excluded[/C][C]0.6023[/C][C]0.6277[/C][C]0.5313[/C][C]0.3598[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=131760&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=131760&T=1

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.74160.77060.74010.4565
Q1 excluded0.77670.78370.73030.5471
Q8 excluded0.68420.71680.65530.4576
Q15 excluded0.67740.720.65420.4616
Q22 excluded0.60230.62770.53130.3598


Figures (Output of Computation)

Input Parameters & R Code

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')