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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

Sat, 17 Dec 2011 19:36:11 -0500

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/2011/Dec/17/t1324168738oheeofwptlvns8j.htm/, Retrieved Fri, 26 Apr 2024 08:35:04 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=156594, Retrieved Fri, 26 Apr 2024 08:35:04 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

107

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

-     [Recursive Partitioning (Regression Trees)] [] [2010-12-05 19:50:12] [b98453cac15ba1066b407e146608df68]
- R PD  [Recursive Partitioning (Regression Trees)] [] [2011-12-12 15:00:28] [77e355412ccdb651b3c7eae41c3da865]
- RMPD      [Cronbach Alpha] [] [2011-12-18 00:36:11] [2be7aedefc35278abdba659ba29c8de8] [Current]

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Dataseries X:

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Histogram

Boxplots

-1	0	1	-1	1	1	1	0
-1	1	1	1	1	1	1	-1
-1	1	-1	0	0	1	1	-1
-1	0	-1	-1	1	1	0	1
-1	-1	1	-1	-1	1	-1	-1
1	-1	1	-1	1	1	1	1
-1	1	1	1	1	1	1	-1
-1	1	1	-1	1	0	0	-1
-1	0	-1	0	1	0	1	-1
0	0	0	0	0	0	0	0
-1	1	-1	-1	1	0	1	1
-1	1	-1	1	1	1	-1	-1
0	1	1	1	-1	1	-1	1
-1	-1	0	1	1	1	-1	-1
-1	1	-1	1	1	1	1	1
0	1	-1	1	1	1	1	-1
0	1	1	-1	1	1	-1	-1
-1	0	-1	1	0	-1	1	1
-1	1	-1	-1	1	1	-1	-1
-1	-1	-1	-1	1	0	1	-1
-1	-1	-1	1	0	-1	0	-1
-1	1	-1	1	1	1	1	-1
-1	-1	-1	1	1	1	1	1
-1	-1	1	-1	-1	-1	1	-1
1	1	-1	1	1	0	-1	1
-1	1	-1	1	1	1	1	-1
-1	1	1	0	1	-1	1	0
-1	-1	-1	1	1	1	1	-1
1	1	1	-1	1	0	1	1
-1	-1	-1	-1	1	1	1	-1
-1	1	1	1	1	-1	-1	-1
-1	-1	1	-1	-1	1	1	-1
-1	1	-1	-1	-1	0	1	-1
-1	1	1	-1	1	1	1	-1
1	-1	1	-1	-1	1	1	1
1	-1	1	1	-1	1	1	-1
-1	1	-1	1	0	-1	0	1
0	1	1	0	1	0	1	0
-1	1	1	1	1	1	1	-1
-1	1	0	1	1	0	-1	1
-1	-1	1	1	1	1	1	-1
-1	-1	1	-1	1	-1	-1	-1
-1	-1	1	1	0	1	1	1
-1	1	1	0	1	1	1	-1
-1	1	1	0	-1	1	1	0
-1	1	-1	1	1	-1	0	-1
-1	1	-1	-1	-1	0	1	-1
-1	1	-1	1	0	0	0	0
-1	-1	-1	1	1	0	1	1
-1	-1	-1	-1	0	1	1	-1
-1	1	1	0	0	1	1	0
-1	-1	-1	1	1	1	1	-1
-1	-1	-1	1	0	0	1	1
0	0	0	0	0	0	0	0
-1	1	-1	0	1	1	1	1
-1	-1	-1	1	-1	0	1	-1
-1	-1	-1	1	1	1	1	-1
-1	-1	-1	0	-1	0	1	-1
-1	1	-1	1	1	1	1	-1
-1	0	0	0	0	0	0	0
-1	1	0	0	0	1	1	1
1	-1	-1	1	1	1	1	-1
1	1	1	-1	1	0	1	1
-1	-1	1	1	1	1	1	-1
-1	-1	1	0	1	0	-1	-1
-1	1	-1	0	1	0	1	-1
-1	1	0	-1	1	1	1	1
0	-1	1	-1	-1	0	1	-1
-1	-1	-1	1	0	0	1	1
-1	1	1	1	1	1	1	1
-1	-1	-1	1	-1	0	1	-1
0	1	0	1	0	1	1	-1
-1	-1	0	-1	0	1	1	1
-1	1	-1	-1	0	0	1	-1
-1	1	0	1	0	-1	1	0
0	0	0	0	0	0	0	0
0	0	-1	1	1	-1	1	1
-1	1	0	1	-1	1	1	0
-1	1	1	-1	-1	0	-1	-1
-1	-1	1	-1	0	-1	1	0
-1	0	1	-1	0	0	1	1
-1	-1	0	-1	-1	-1	1	0
0	1	0	0	0	0	0	-1
0	1	-1	1	0	1	-1	0
-1	-1	-1	1	1	1	1	-1

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	'AstonUniversity' @ aston.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 & 'AstonUniversity' @ aston.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=156594&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]'AstonUniversity' @ aston.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=156594&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=156594&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	'AstonUniversity' @ aston.wessa.net

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.1353	0.1594	0.222	0.0232
Q1 excluded	0.078	0.0993	0.1609	0.0155
Q2 excluded	0.0785	0.1201	0.1835	0.0191
Q3 excluded	0.2354	0.2319	0.2551	0.0413
Q4 excluded	0.1839	0.1966	0.2317	0.0338
Q5 excluded	0.042	0.0781	0.1453	0.012
Q6 excluded	0.055	0.0697	0.1404	0.0106
Q7 excluded	0.1913	0.218	0.2574	0.0383
Q8 excluded	0.0674	0.0941	0.1584	0.0146

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.1353 & 0.1594 & 0.222 & 0.0232 \tabularnewline
Q1 excluded & 0.078 & 0.0993 & 0.1609 & 0.0155 \tabularnewline
Q2 excluded & 0.0785 & 0.1201 & 0.1835 & 0.0191 \tabularnewline
Q3 excluded & 0.2354 & 0.2319 & 0.2551 & 0.0413 \tabularnewline
Q4 excluded & 0.1839 & 0.1966 & 0.2317 & 0.0338 \tabularnewline
Q5 excluded & 0.042 & 0.0781 & 0.1453 & 0.012 \tabularnewline
Q6 excluded & 0.055 & 0.0697 & 0.1404 & 0.0106 \tabularnewline
Q7 excluded & 0.1913 & 0.218 & 0.2574 & 0.0383 \tabularnewline
Q8 excluded & 0.0674 & 0.0941 & 0.1584 & 0.0146 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=156594&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]0.1353[/C][C]0.1594[/C][C]0.222[/C][C]0.0232[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.078[/C][C]0.0993[/C][C]0.1609[/C][C]0.0155[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.0785[/C][C]0.1201[/C][C]0.1835[/C][C]0.0191[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.2354[/C][C]0.2319[/C][C]0.2551[/C][C]0.0413[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.1839[/C][C]0.1966[/C][C]0.2317[/C][C]0.0338[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.042[/C][C]0.0781[/C][C]0.1453[/C][C]0.012[/C][/ROW]
[ROW][C]Q6 excluded[/C][C]0.055[/C][C]0.0697[/C][C]0.1404[/C][C]0.0106[/C][/ROW]
[ROW][C]Q7 excluded[/C][C]0.1913[/C][C]0.218[/C][C]0.2574[/C][C]0.0383[/C][/ROW]
[ROW][C]Q8 excluded[/C][C]0.0674[/C][C]0.0941[/C][C]0.1584[/C][C]0.0146[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=156594&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=156594&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	0.1353	0.1594	0.222	0.0232
Q1 excluded	0.078	0.0993	0.1609	0.0155
Q2 excluded	0.0785	0.1201	0.1835	0.0191
Q3 excluded	0.2354	0.2319	0.2551	0.0413
Q4 excluded	0.1839	0.1966	0.2317	0.0338
Q5 excluded	0.042	0.0781	0.1453	0.012
Q6 excluded	0.055	0.0697	0.1404	0.0106
Q7 excluded	0.1913	0.218	0.2574	0.0383
Q8 excluded	0.0674	0.0941	0.1584	0.0146

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