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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

Fri, 12 Dec 2014 14:23:17 +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/12/t1418394208dd0pociexlhux0k.htm/, Retrieved Wed, 11 Feb 2026 13:40:32 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=266735, Retrieved Wed, 11 Feb 2026 13:40:32 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

291

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

-       [Cronbach Alpha] [] [2014-12-12 14:23:17] [921bde233b8ec180d9061abb09deed53] [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	1 seconds
R Server	'Gwilym Jenkins' @ jenkins.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 & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=266735&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]'Gwilym Jenkins' @ jenkins.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=266735&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=266735&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	'Gwilym Jenkins' @ jenkins.wessa.net

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.5277	0.5305	0.4667	0.2736
NUMERACYQ7 excluded	0.6505	0.651	0.4826	0.4826
NUMERACYQ17.1 excluded	0.2542	0.2542	0.1456	0.1456
NUMERACYQ17.2 excluded	0.3226	0.3229	0.1925	0.1925

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.5277 & 0.5305 & 0.4667 & 0.2736 \tabularnewline
NUMERACYQ7 excluded & 0.6505 & 0.651 & 0.4826 & 0.4826 \tabularnewline
NUMERACYQ17.1 excluded & 0.2542 & 0.2542 & 0.1456 & 0.1456 \tabularnewline
NUMERACYQ17.2 excluded & 0.3226 & 0.3229 & 0.1925 & 0.1925 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=266735&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]0.5277[/C][C]0.5305[/C][C]0.4667[/C][C]0.2736[/C][/ROW]
[ROW][C]NUMERACYQ7 excluded[/C][C]0.6505[/C][C]0.651[/C][C]0.4826[/C][C]0.4826[/C][/ROW]
[ROW][C]NUMERACYQ17.1 excluded[/C][C]0.2542[/C][C]0.2542[/C][C]0.1456[/C][C]0.1456[/C][/ROW]
[ROW][C]NUMERACYQ17.2 excluded[/C][C]0.3226[/C][C]0.3229[/C][C]0.1925[/C][C]0.1925[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=266735&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=266735&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	0.5277	0.5305	0.4667	0.2736
NUMERACYQ7 excluded	0.6505	0.651	0.4826	0.4826
NUMERACYQ17.1 excluded	0.2542	0.2542	0.1456	0.1456
NUMERACYQ17.2 excluded	0.3226	0.3229	0.1925	0.1925

Parameters (Session):

par1 = 0 1 ;

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