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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, 16 Dec 2014 14:26:32 +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/16/t14187400168fie14tmc3kyvmi.htm/, Retrieved Mon, 18 May 2026 21:15:40 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=269615, Retrieved Mon, 18 May 2026 21:15:40 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

358

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

-     [Cronbach Alpha] [CA ] [2014-12-12 10:49:45] [40df8d8b5657a9599acc6ccced535535]
-    D    [Cronbach Alpha] [CA] [2014-12-16 14:26:32] [eeaae55b7499419163eef5a1870a44a7] [Current]

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0 0 1 1 0 0 0 1 1 1
0 0 1 1 0 1 1 1 0 1
1 0 1 1 0 0 0 0 1 1
0 0 1 1 0 0 0 1 1 0
0 0 1 1 1 1 0 1 0 0
0 0 1 1 1 1 1 1 1 0
0 1 1 0 0 0 0 0 0 1
0 0 1 1 0 0 0 0 1 1
0 0 1 1 1 0 0 1 0 0
1 1 1 1 1 0 0 1 1 0
0 0 1 1 1 0 0 1 1 1
1 0 1 1 1 0 1 1 0 0
0 0 1 0 0 0 0 1 0 0
0 0 1 0 1 0 0 0 1 1
0 0 1 1 1 0 0 0 1 0
1 0 1 0 1 0 1 0 1 0
0 0 1 1 0 0 0 1 0 0
0 0 1 1 1 1 0 0 0 0
1 1 1 1 1 1 0 1 0 0
0 1 1 1 1 0 0 0 1 0
0 0 1 0 0 0 0 0 1 0
0 0 1 1 0 0 0 1 0 0
0 0 1 1 1 0 1 1 1 0
1 1 1 1 0 0 0 1 1 0
0 0 1 0 0 0 0 0 1 0
0 1 1 1 1 0 0 1 1 1
0 0 1 0 0 0 0 0 0 1
1 1 1 1 1 1 1 1 1 1
0 1 1 1 0 0 0 0 0 1
0 1 1 1 0 0 0 0 1 0
0 0 1 1 0 0 0 0 0 0
0 0 1 1 1 0 0 0 1 0
0 0 1 1 1 0 0 1 0 0
0 0 1 1 0 1 1 1 0 1
0 0 1 1 1 1 1 0 1 1
0 0 1 1 0 0 0 0 0 0
0 1 1 1 0 1 0 1 1 0
0 0 1 0 1 0 0 0 1 0
0 1 0 1 0 0 0 1 0 0
0 0 1 1 0 0 0 0 0 0
1 0 1 1 0 0 0 0 1 1
0 0 1 1 1 1 1 0 1 1
0 1 1 1 1 0 0 0 1 1
0 1 1 1 0 0 0 0 0 1
0 0 1 1 1 1 1 0 1 0
0 0 1 1 0 0 0 0 1 1
0 0 1 1 0 0 0 0 0 1
0 0 1 1 1 1 0 0 1 0
0 0 1 1 0 0 0 0 0 0
0 0 1 1 0 0 0 0 1 0
0 0 1 1 0 0 0 1 1 1
0 0 1 1 1 1 1 1 1 0
0 1 1 1 0 0 0 0 1 0
0 0 0 1 0 0 0 1 0 1
0 0 1 0 1 0 0 0 0 0
0 0 1 1 0 1 1 0 1 0
0 0 1 1 0 0 0 1 0 1
0 0 1 1 1 1 0 0 1 1
0 0 1 1 0 0 0 1 1 0
1 1 1 1 0 0 0 0 0 0
0 0 1 1 0 0 0 0 0 0
1 0 1 1 1 1 1 1 1 1
1 0 1 1 1 1 1 0 1 1
0 1 1 1 1 1 1 1 1 0
0 0 1 1 0 0 0 0 1 0
0 0 1 0 0 0 0 0 1 0
0 1 1 1 0 0 0 0 1 0
0 0 1 0 0 0 0 0 1 0
0 0 1 1 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
0 1 1 0 0 0 0 0 1 1
0 0 1 1 1 0 0 1 1 0
0 0 1 1 1 1 1 1 1 1
0 0 1 0 1 0 1 0 1 0
0 0 1 1 0 1 0 1 1 1
0 0 1 1 0 1 0 1 0 1
0 0 1 1 0 1 1 1 0 1
1 0 1 0 0 0 0 0 1 0
0 0 1 1 1 1 1 1 1 1
0 0 1 1 0 0 0 0 1 1
0 0 1 1 1 1 1 0 0 1
0 1 1 1 0 0 0 0 1 0
0 0 1 1 0 0 0 0 1 0
0 0 1 1 1 1 1 1 1 1
0 1 1 0 1 0 0 1 1 1
0 0 1 1 0 0 0 0 0 1
0 0 1 1 1 0 0 1 1 0
0 0 1 1 1 0 0 0 1 0
0 0 1 1 0 0 0 1 0 0
0 0 1 1 1 1 0 1 1 1
0 0 1 0 1 0 0 0 0 0
0 0 1 1 1 1 0 0 0 0
1 1 1 1 0 0 0 1 1 0
0 0 0 1 1 1 1 0 1 1
0 0 1 1 1 0 0 1 1 1
0 0 1 1 1 0 0 1 0 0
0 1 1 1 1 1 1 0 0 0
0 0 1 1 1 1 1 0 0 0
0 1 1 1 0 0 0 0 1 1
1 0 1 1 1 1 0 0 1 0
1 0 1 1 1 1 1 1 1 0
1 0 1 1 0 0 0 1 1 0
1 0 1 0 1 1 0 1 0 1
0 0 1 1 0 0 0 1 1 0
0 0 1 0 0 0 1 1 0 0
0 0 1 1 0 0 0 0 1 0
0 0 1 1 0 0 0 0 0 0
1 1 1 0 0 0 0 0 0 1
0 1 1 1 0 0 0 1 1 0
0 1 1 0 0 0 0 0 0 1
1 0 1 1 0 0 0 0 0 1
0 0 1 1 1 0 1 0 0 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	'Sir Maurice George Kendall' @ kendall.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 & 'Sir Maurice George Kendall' @ kendall.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269615&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]'Sir Maurice George Kendall' @ kendall.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269615&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269615&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	'Sir Maurice George Kendall' @ kendall.wessa.net

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.5189	0.4923	0.5335	0.0884
ALGEBQ3.1 excluded	0.5327	0.5161	0.5503	0.1059
ALGEBQ3.2 excluded	0.5413	0.518	0.551	0.1067
ALGEBQ6.1 excluded	0.5277	0.5238	0.5576	0.1089
ALGEBQ6.2 excluded	0.4959	0.464	0.5044	0.0877
ALGEBQ9.1 excluded	0.4321	0.4113	0.4522	0.072
ALGEBQ9.2 excluded	0.3776	0.3501	0.3751	0.0565
ALGEBQ9.3 excluded	0.405	0.3714	0.4057	0.0616
ALGEBQ13 excluded	0.4936	0.456	0.5032	0.0852
ALGEBQ16 excluded	0.5333	0.5037	0.5405	0.1013
ALGEBQ19 excluded	0.5328	0.494	0.5345	0.0979

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.5189 & 0.4923 & 0.5335 & 0.0884 \tabularnewline
ALGEBQ3.1 excluded & 0.5327 & 0.5161 & 0.5503 & 0.1059 \tabularnewline
ALGEBQ3.2 excluded & 0.5413 & 0.518 & 0.551 & 0.1067 \tabularnewline
ALGEBQ6.1 excluded & 0.5277 & 0.5238 & 0.5576 & 0.1089 \tabularnewline
ALGEBQ6.2 excluded & 0.4959 & 0.464 & 0.5044 & 0.0877 \tabularnewline
ALGEBQ9.1 excluded & 0.4321 & 0.4113 & 0.4522 & 0.072 \tabularnewline
ALGEBQ9.2 excluded & 0.3776 & 0.3501 & 0.3751 & 0.0565 \tabularnewline
ALGEBQ9.3 excluded & 0.405 & 0.3714 & 0.4057 & 0.0616 \tabularnewline
ALGEBQ13 excluded & 0.4936 & 0.456 & 0.5032 & 0.0852 \tabularnewline
ALGEBQ16 excluded & 0.5333 & 0.5037 & 0.5405 & 0.1013 \tabularnewline
ALGEBQ19 excluded & 0.5328 & 0.494 & 0.5345 & 0.0979 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269615&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]0.5189[/C][C]0.4923[/C][C]0.5335[/C][C]0.0884[/C][/ROW]
[ROW][C]ALGEBQ3.1 excluded[/C][C]0.5327[/C][C]0.5161[/C][C]0.5503[/C][C]0.1059[/C][/ROW]
[ROW][C]ALGEBQ3.2 excluded[/C][C]0.5413[/C][C]0.518[/C][C]0.551[/C][C]0.1067[/C][/ROW]
[ROW][C]ALGEBQ6.1 excluded[/C][C]0.5277[/C][C]0.5238[/C][C]0.5576[/C][C]0.1089[/C][/ROW]
[ROW][C]ALGEBQ6.2 excluded[/C][C]0.4959[/C][C]0.464[/C][C]0.5044[/C][C]0.0877[/C][/ROW]
[ROW][C]ALGEBQ9.1 excluded[/C][C]0.4321[/C][C]0.4113[/C][C]0.4522[/C][C]0.072[/C][/ROW]
[ROW][C]ALGEBQ9.2 excluded[/C][C]0.3776[/C][C]0.3501[/C][C]0.3751[/C][C]0.0565[/C][/ROW]
[ROW][C]ALGEBQ9.3 excluded[/C][C]0.405[/C][C]0.3714[/C][C]0.4057[/C][C]0.0616[/C][/ROW]
[ROW][C]ALGEBQ13 excluded[/C][C]0.4936[/C][C]0.456[/C][C]0.5032[/C][C]0.0852[/C][/ROW]
[ROW][C]ALGEBQ16 excluded[/C][C]0.5333[/C][C]0.5037[/C][C]0.5405[/C][C]0.1013[/C][/ROW]
[ROW][C]ALGEBQ19 excluded[/C][C]0.5328[/C][C]0.494[/C][C]0.5345[/C][C]0.0979[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269615&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269615&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	0.5189	0.4923	0.5335	0.0884
ALGEBQ3.1 excluded	0.5327	0.5161	0.5503	0.1059
ALGEBQ3.2 excluded	0.5413	0.518	0.551	0.1067
ALGEBQ6.1 excluded	0.5277	0.5238	0.5576	0.1089
ALGEBQ6.2 excluded	0.4959	0.464	0.5044	0.0877
ALGEBQ9.1 excluded	0.4321	0.4113	0.4522	0.072
ALGEBQ9.2 excluded	0.3776	0.3501	0.3751	0.0565
ALGEBQ9.3 excluded	0.405	0.3714	0.4057	0.0616
ALGEBQ13 excluded	0.4936	0.456	0.5032	0.0852
ALGEBQ16 excluded	0.5333	0.5037	0.5405	0.1013
ALGEBQ19 excluded	0.5328	0.494	0.5345	0.0979

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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Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code