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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

Sun, 07 Dec 2014 12:37:18 +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/07/t1417956010wz5lv38u4tt5fq9.htm/, Retrieved Thu, 12 Feb 2026 13:43:50 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=263756, Retrieved Thu, 12 Feb 2026 13:43:50 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

285

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]
- RMPD  [Notched Boxplots] [] [2014-10-15 12:34:22] [d253a55552bf9917a397def3be261e30]
- RMPD      [Cronbach Alpha] [] [2014-12-07 12:37:18] [08b6b59c0a3564dc58beca6de73ddb7e] [Current]

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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	0 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 & 0 seconds \tabularnewline
R Server & 'Gertrude Mary Cox' @ cox.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=263756&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]0 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=263756&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=263756&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	0 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	0.8596	0.8743	0.8505	0.6348
AMS5 excluded	0.781	0.8069	0.7505	0.5821
AMS12 excluded	0.8791	0.88	0.8304	0.7097
AMS19 excluded	0.8163	0.833	0.7802	0.6244
AMS26 excluded	0.8142	0.8322	0.7863	0.6232

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8596 & 0.8743 & 0.8505 & 0.6348 \tabularnewline
AMS5 excluded & 0.781 & 0.8069 & 0.7505 & 0.5821 \tabularnewline
AMS12 excluded & 0.8791 & 0.88 & 0.8304 & 0.7097 \tabularnewline
AMS19 excluded & 0.8163 & 0.833 & 0.7802 & 0.6244 \tabularnewline
AMS26 excluded & 0.8142 & 0.8322 & 0.7863 & 0.6232 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=263756&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]0.8596[/C][C]0.8743[/C][C]0.8505[/C][C]0.6348[/C][/ROW]
[ROW][C]AMS5 excluded[/C][C]0.781[/C][C]0.8069[/C][C]0.7505[/C][C]0.5821[/C][/ROW]
[ROW][C]AMS12 excluded[/C][C]0.8791[/C][C]0.88[/C][C]0.8304[/C][C]0.7097[/C][/ROW]
[ROW][C]AMS19 excluded[/C][C]0.8163[/C][C]0.833[/C][C]0.7802[/C][C]0.6244[/C][/ROW]
[ROW][C]AMS26 excluded[/C][C]0.8142[/C][C]0.8322[/C][C]0.7863[/C][C]0.6232[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=263756&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=263756&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	0.8596	0.8743	0.8505	0.6348
AMS5 excluded	0.781	0.8069	0.7505	0.5821
AMS12 excluded	0.8791	0.88	0.8304	0.7097
AMS19 excluded	0.8163	0.833	0.7802	0.6244
AMS26 excluded	0.8142	0.8322	0.7863	0.6232

Parameters (Session):

par1 = TRUE ;

Parameters (R input):

par1 = TRUE ;

R code (references can be found in the software module):

library(psych)
par1b <- T
if(par1=='FALSE') par1b <- F
z <- t(y)
(r <- alpha(z,check.keys=par1b))
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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Input Parameters & R Code