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Author

*Unverified author*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Tue, 27 Feb 2018 23:35:10 +0100

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/2018/Feb/27/t1519771469ryslnto1pdoogkd.htm/, Retrieved Sat, 29 Aug 2026 14:19:08 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=315002, Retrieved Sat, 29 Aug 2026 14:19:08 +0000

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Original text written by user:

0,92

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

457

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

-       [Cronbach Alpha] [AUTOEVALUACION DE...] [2018-02-27 22:35:10] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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Boxplots

5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
3 4 4 4 5 5 5 4 1 4 5 5 1 5 4 5 5 4 4 4 3 4 2 3 3 5 5 5 4 5 5 5 5 5 5 5 5 5 5
4 4 4 5 4 5 5 4 2 4 5 4 3 4 3 4 4 4 2 4 4 4 4 5 2 3 3 3 3 5 5 5 4 5 3 4 3 5 5
5 5 5 5 5 5 5 5 3 5 5 5 3 5 5 5 5 5 3 5 5 5 5 5 3 5 5 4 5 5 5 5 3 5 5 5 5 5 5
5 5 5 5 5 4 5 4 3 4 5 5 4 4 4 4 4 3 4 5 5 5 5 4 5 5 5 5 5 5 5 5 5 5 4 4 4 5 5
5 3 4 5 5 5 5 3 2 4 5 5 2 4 5 4 5 5 5 5 5 5 4 5 4 5 5 5 4 5 5 5 5 5 5 5 5 5 5
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 
4 4 4 5 4 4 4 5 3 3 5 5 3 4 5 4 4 4 5 5 4 4 4 4 4 5 4 5 4 5 5 5 5 5 5 5 5 5 5
5 5 5 5 5 5 5 4 3 5 5 5 3 5 5 5 5 4 5 5 5 5 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
4 3 4 4 4 3 5 4 3 3 4 4 3 3 4 3 4 2 3 4 4 4 3 3 4 4 4 4 3 4 5 4 4 4 4 4 4 4 4
4 4 4 4 4 4 4 4 3 3 4 4 4 4 5 5 5 5 4 5 3 3 4 4 4 5 4 4 4 5 5 5 5 5 5 5 4 5 5
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 4 4 4 4 2 2 4 3 3 5 5 5 5 5 5 5 5 4 4 
5 5 5 5 5 5 5 5 3 4 4 4 4 4 5 5 5 5 5 5 5 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 
5 5 5 5 5 5 5 5 2 5 5 5 2 4 5 5 5 4 3 4 5 2 4 4 2 5 5 3 3 5 5 5 5 5 5 5 5 3 5
5 5 5 5 5 4 4 5 5 5 5 4 5 5 5 5 5 3 4 5 5 5 5 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
5 3 5 4 4 4 5 1 2 4 5 5 1 4 5 5 5 4 3 5 4 3 4 5 5 5 5 4 5 5 5 5 4 5 5 5 5 4 5
4 4 5 5 5 5 5 4 4 5 5 5 4 5 5 5 5 5 3 5 4 5 5 4 4 5 4 4 5 5 5 5 5 5 5 5 5 5 5 
5 5 4 5 5 4 5 5 4 5 5 5 3 5 5 5 5 5 5 5 4 5 5 5 3 4 4 5 5 5 5 5 5 5 5 5 5 5 5

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	Big Analytics Cloud Computing Center

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input view raw input (R code)  \tabularnewline
Raw Outputview raw output of R engine  \tabularnewline
Computing time1 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=315002&T=0

[TABLE]
[ROW]

Summary of computational transaction[/C][/ROW] [ROW]

Raw Input[/C]

view raw input (R code) [/C][/ROW] [ROW]

Raw Output[/C]

view raw output of R engine [/C][/ROW] [ROW]

Computing time[/C]

1 seconds[/C][/ROW] [ROW]

R Server[/C]

Big Analytics Cloud Computing Center[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=315002&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=315002&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	Big Analytics Cloud Computing Center

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.9251	0.9418	1	0.2985
V1 excluded	0.9223	0.94	1	0.2975
V2 excluded	0.9212	0.9395	1	0.2957
V3 excluded	0.9226	0.9399	1	0.2971
V4 excluded	0.9227	0.9398	1	0.2966
V5 excluded	0.9218	0.9386	1	0.2923
V6 excluded	0.9238	0.9404	1	0.2988
V7 excluded	0.9265	0.9443	1	0.3143
V8 excluded	0.9262	0.9424	1	0.3066
V9 excluded	0.9231	0.9408	1	0.3003
V10 excluded	0.921	0.9388	1	0.2932
V11 excluded	0.9246	0.9412	1	0.302
V12 excluded	0.9242	0.9408	1	0.3006
V13 excluded	0.9258	0.9418	1	0.3041
V14 excluded	0.921	0.9385	1	0.2921
V15 excluded	0.9218	0.9394	1	0.2951
V16 excluded	0.922	0.939	1	0.2936
V17 excluded	0.923	0.9395	1	0.2958
V18 excluded	0.9232	0.9399	1	0.2971
V19 excluded	0.9221	0.9401	1	0.2978
V20 excluded	0.922	0.939	1	0.2939
V21 excluded	0.9224	0.9404	1	0.2988
V22 excluded	0.9228	0.9409	1	0.3008
V23 excluded	0.9212	0.9397	1	0.2962
V24 excluded	0.9231	0.9403	1	0.2985
V25 excluded	0.9262	0.9421	1	0.3053
V26 excluded	0.9259	0.9421	1	0.3054
V27 excluded	0.923	0.9403	1	0.2985
V28 excluded	0.9233	0.9411	1	0.3016
V29 excluded	0.9202	0.9389	1	0.2934
V30 excluded	0.924	0.9391	1	0.2943
V31 excluded	0.924	0.9391	1	0.2943
V32 excluded	0.9245	0.942	1	0.3049
V33 excluded	0.924	0.9391	1	0.2943
V34 excluded	0.9225	0.9396	1	0.296
V35 excluded	0.9231	0.9394	1	0.2951
V36 excluded	0.922	0.9392	1	0.2944
V37 excluded	0.9243	0.9421	1	0.3053
V38 excluded	0.9244	0.9409	1	0.301
V39 excluded	NA	NA	NA	NA

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.9251 & 0.9418 & 1 & 0.2985 \tabularnewline
V1 excluded & 0.9223 & 0.94 & 1 & 0.2975 \tabularnewline
V2 excluded & 0.9212 & 0.9395 & 1 & 0.2957 \tabularnewline
V3 excluded & 0.9226 & 0.9399 & 1 & 0.2971 \tabularnewline
V4 excluded & 0.9227 & 0.9398 & 1 & 0.2966 \tabularnewline
V5 excluded & 0.9218 & 0.9386 & 1 & 0.2923 \tabularnewline
V6 excluded & 0.9238 & 0.9404 & 1 & 0.2988 \tabularnewline
V7 excluded & 0.9265 & 0.9443 & 1 & 0.3143 \tabularnewline
V8 excluded & 0.9262 & 0.9424 & 1 & 0.3066 \tabularnewline
V9 excluded & 0.9231 & 0.9408 & 1 & 0.3003 \tabularnewline
V10 excluded & 0.921 & 0.9388 & 1 & 0.2932 \tabularnewline
V11 excluded & 0.9246 & 0.9412 & 1 & 0.302 \tabularnewline
V12 excluded & 0.9242 & 0.9408 & 1 & 0.3006 \tabularnewline
V13 excluded & 0.9258 & 0.9418 & 1 & 0.3041 \tabularnewline
V14 excluded & 0.921 & 0.9385 & 1 & 0.2921 \tabularnewline
V15 excluded & 0.9218 & 0.9394 & 1 & 0.2951 \tabularnewline
V16 excluded & 0.922 & 0.939 & 1 & 0.2936 \tabularnewline
V17 excluded & 0.923 & 0.9395 & 1 & 0.2958 \tabularnewline
V18 excluded & 0.9232 & 0.9399 & 1 & 0.2971 \tabularnewline
V19 excluded & 0.9221 & 0.9401 & 1 & 0.2978 \tabularnewline
V20 excluded & 0.922 & 0.939 & 1 & 0.2939 \tabularnewline
V21 excluded & 0.9224 & 0.9404 & 1 & 0.2988 \tabularnewline
V22 excluded & 0.9228 & 0.9409 & 1 & 0.3008 \tabularnewline
V23 excluded & 0.9212 & 0.9397 & 1 & 0.2962 \tabularnewline
V24 excluded & 0.9231 & 0.9403 & 1 & 0.2985 \tabularnewline
V25 excluded & 0.9262 & 0.9421 & 1 & 0.3053 \tabularnewline
V26 excluded & 0.9259 & 0.9421 & 1 & 0.3054 \tabularnewline
V27 excluded & 0.923 & 0.9403 & 1 & 0.2985 \tabularnewline
V28 excluded & 0.9233 & 0.9411 & 1 & 0.3016 \tabularnewline
V29 excluded & 0.9202 & 0.9389 & 1 & 0.2934 \tabularnewline
V30 excluded & 0.924 & 0.9391 & 1 & 0.2943 \tabularnewline
V31 excluded & 0.924 & 0.9391 & 1 & 0.2943 \tabularnewline
V32 excluded & 0.9245 & 0.942 & 1 & 0.3049 \tabularnewline
V33 excluded & 0.924 & 0.9391 & 1 & 0.2943 \tabularnewline
V34 excluded & 0.9225 & 0.9396 & 1 & 0.296 \tabularnewline
V35 excluded & 0.9231 & 0.9394 & 1 & 0.2951 \tabularnewline
V36 excluded & 0.922 & 0.9392 & 1 & 0.2944 \tabularnewline
V37 excluded & 0.9243 & 0.9421 & 1 & 0.3053 \tabularnewline
V38 excluded & 0.9244 & 0.9409 & 1 & 0.301 \tabularnewline
V39 excluded & NA & NA & NA & NA \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=315002&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]0.9251[/C][C]0.9418[/C][C]1[/C][C]0.2985[/C][/ROW]
[ROW][C]V1 excluded[/C][C]0.9223[/C][C]0.94[/C][C]1[/C][C]0.2975[/C][/ROW]
[ROW][C]V2 excluded[/C][C]0.9212[/C][C]0.9395[/C][C]1[/C][C]0.2957[/C][/ROW]
[ROW][C]V3 excluded[/C][C]0.9226[/C][C]0.9399[/C][C]1[/C][C]0.2971[/C][/ROW]
[ROW][C]V4 excluded[/C][C]0.9227[/C][C]0.9398[/C][C]1[/C][C]0.2966[/C][/ROW]
[ROW][C]V5 excluded[/C][C]0.9218[/C][C]0.9386[/C][C]1[/C][C]0.2923[/C][/ROW]
[ROW][C]V6 excluded[/C][C]0.9238[/C][C]0.9404[/C][C]1[/C][C]0.2988[/C][/ROW]
[ROW][C]V7 excluded[/C][C]0.9265[/C][C]0.9443[/C][C]1[/C][C]0.3143[/C][/ROW]
[ROW][C]V8 excluded[/C][C]0.9262[/C][C]0.9424[/C][C]1[/C][C]0.3066[/C][/ROW]
[ROW][C]V9 excluded[/C][C]0.9231[/C][C]0.9408[/C][C]1[/C][C]0.3003[/C][/ROW]
[ROW][C]V10 excluded[/C][C]0.921[/C][C]0.9388[/C][C]1[/C][C]0.2932[/C][/ROW]
[ROW][C]V11 excluded[/C][C]0.9246[/C][C]0.9412[/C][C]1[/C][C]0.302[/C][/ROW]
[ROW][C]V12 excluded[/C][C]0.9242[/C][C]0.9408[/C][C]1[/C][C]0.3006[/C][/ROW]
[ROW][C]V13 excluded[/C][C]0.9258[/C][C]0.9418[/C][C]1[/C][C]0.3041[/C][/ROW]
[ROW][C]V14 excluded[/C][C]0.921[/C][C]0.9385[/C][C]1[/C][C]0.2921[/C][/ROW]
[ROW][C]V15 excluded[/C][C]0.9218[/C][C]0.9394[/C][C]1[/C][C]0.2951[/C][/ROW]
[ROW][C]V16 excluded[/C][C]0.922[/C][C]0.939[/C][C]1[/C][C]0.2936[/C][/ROW]
[ROW][C]V17 excluded[/C][C]0.923[/C][C]0.9395[/C][C]1[/C][C]0.2958[/C][/ROW]
[ROW][C]V18 excluded[/C][C]0.9232[/C][C]0.9399[/C][C]1[/C][C]0.2971[/C][/ROW]
[ROW][C]V19 excluded[/C][C]0.9221[/C][C]0.9401[/C][C]1[/C][C]0.2978[/C][/ROW]
[ROW][C]V20 excluded[/C][C]0.922[/C][C]0.939[/C][C]1[/C][C]0.2939[/C][/ROW]
[ROW][C]V21 excluded[/C][C]0.9224[/C][C]0.9404[/C][C]1[/C][C]0.2988[/C][/ROW]
[ROW][C]V22 excluded[/C][C]0.9228[/C][C]0.9409[/C][C]1[/C][C]0.3008[/C][/ROW]
[ROW][C]V23 excluded[/C][C]0.9212[/C][C]0.9397[/C][C]1[/C][C]0.2962[/C][/ROW]
[ROW][C]V24 excluded[/C][C]0.9231[/C][C]0.9403[/C][C]1[/C][C]0.2985[/C][/ROW]
[ROW][C]V25 excluded[/C][C]0.9262[/C][C]0.9421[/C][C]1[/C][C]0.3053[/C][/ROW]
[ROW][C]V26 excluded[/C][C]0.9259[/C][C]0.9421[/C][C]1[/C][C]0.3054[/C][/ROW]
[ROW][C]V27 excluded[/C][C]0.923[/C][C]0.9403[/C][C]1[/C][C]0.2985[/C][/ROW]
[ROW][C]V28 excluded[/C][C]0.9233[/C][C]0.9411[/C][C]1[/C][C]0.3016[/C][/ROW]
[ROW][C]V29 excluded[/C][C]0.9202[/C][C]0.9389[/C][C]1[/C][C]0.2934[/C][/ROW]
[ROW][C]V30 excluded[/C][C]0.924[/C][C]0.9391[/C][C]1[/C][C]0.2943[/C][/ROW]
[ROW][C]V31 excluded[/C][C]0.924[/C][C]0.9391[/C][C]1[/C][C]0.2943[/C][/ROW]
[ROW][C]V32 excluded[/C][C]0.9245[/C][C]0.942[/C][C]1[/C][C]0.3049[/C][/ROW]
[ROW][C]V33 excluded[/C][C]0.924[/C][C]0.9391[/C][C]1[/C][C]0.2943[/C][/ROW]
[ROW][C]V34 excluded[/C][C]0.9225[/C][C]0.9396[/C][C]1[/C][C]0.296[/C][/ROW]
[ROW][C]V35 excluded[/C][C]0.9231[/C][C]0.9394[/C][C]1[/C][C]0.2951[/C][/ROW]
[ROW][C]V36 excluded[/C][C]0.922[/C][C]0.9392[/C][C]1[/C][C]0.2944[/C][/ROW]
[ROW][C]V37 excluded[/C][C]0.9243[/C][C]0.9421[/C][C]1[/C][C]0.3053[/C][/ROW]
[ROW][C]V38 excluded[/C][C]0.9244[/C][C]0.9409[/C][C]1[/C][C]0.301[/C][/ROW]
[ROW][C]V39 excluded[/C][C]NA[/C][C]NA[/C][C]NA[/C][C]NA[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=315002&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=315002&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	0.9251	0.9418	1	0.2985
V1 excluded	0.9223	0.94	1	0.2975
V2 excluded	0.9212	0.9395	1	0.2957
V3 excluded	0.9226	0.9399	1	0.2971
V4 excluded	0.9227	0.9398	1	0.2966
V5 excluded	0.9218	0.9386	1	0.2923
V6 excluded	0.9238	0.9404	1	0.2988
V7 excluded	0.9265	0.9443	1	0.3143
V8 excluded	0.9262	0.9424	1	0.3066
V9 excluded	0.9231	0.9408	1	0.3003
V10 excluded	0.921	0.9388	1	0.2932
V11 excluded	0.9246	0.9412	1	0.302
V12 excluded	0.9242	0.9408	1	0.3006
V13 excluded	0.9258	0.9418	1	0.3041
V14 excluded	0.921	0.9385	1	0.2921
V15 excluded	0.9218	0.9394	1	0.2951
V16 excluded	0.922	0.939	1	0.2936
V17 excluded	0.923	0.9395	1	0.2958
V18 excluded	0.9232	0.9399	1	0.2971
V19 excluded	0.9221	0.9401	1	0.2978
V20 excluded	0.922	0.939	1	0.2939
V21 excluded	0.9224	0.9404	1	0.2988
V22 excluded	0.9228	0.9409	1	0.3008
V23 excluded	0.9212	0.9397	1	0.2962
V24 excluded	0.9231	0.9403	1	0.2985
V25 excluded	0.9262	0.9421	1	0.3053
V26 excluded	0.9259	0.9421	1	0.3054
V27 excluded	0.923	0.9403	1	0.2985
V28 excluded	0.9233	0.9411	1	0.3016
V29 excluded	0.9202	0.9389	1	0.2934
V30 excluded	0.924	0.9391	1	0.2943
V31 excluded	0.924	0.9391	1	0.2943
V32 excluded	0.9245	0.942	1	0.3049
V33 excluded	0.924	0.9391	1	0.2943
V34 excluded	0.9225	0.9396	1	0.296
V35 excluded	0.9231	0.9394	1	0.2951
V36 excluded	0.922	0.9392	1	0.2944
V37 excluded	0.9243	0.9421	1	0.3053
V38 excluded	0.9244	0.9409	1	0.301
V39 excluded	NA	NA	NA	NA

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')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code