Repository of Reproducible Computations

Free Statistics

of Irreproducible Research!

Author's title

Author

*Unverified author*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Tue, 12 Dec 2017 22:30:53 +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/2017/Dec/12/t151311465449tn5r768mkkfxh.htm/, Retrieved Thu, 27 Aug 2026 07:54:14 +0200

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=, Retrieved Thu, 27 Aug 2026 07:54:14 +0200

QR Codes:

Paste this QR Code to cite your computation.

Original text written by user:

IsPrivate?

This computation is/was private until 2018-01-01

User-defined keywords

Estimated Impact

Dataseries X:

Download CSV

Histogram

Boxplots

3	3	3	2	3	2	2	2	2	2	2	3	3	1	1	2	3	2	2	2	3	2	2	2	2	3	1	1	1	3	3	1
2	3	2	2	3	1	2	2	3	2	2	3	2	1	1	1	1	1	2	2	1	2	2	2	2	3	1	1	2	3	3	1
2	3	2	2	2	1	2	2	2	2	2	3	3	1	1	2	2	1	2	1	3	2	2	2	2	2	1	1	2	3	3	1
2	3	2	2	2	1	2	2	1	2	2	3	3	1	1	2	2	2	3	1	3	2	2	3	2	3	1	1	2	3	3	1
3	2	1	2	3	1	2	2	1	2	2	3	2	1	1	2	1	2	1	2	2	2	1	2	3	2	1	1	2	3	3	1
3	3	1	2	2	1	2	1	3	2	2	1	3	1	1	2	2	1	3	2	3	1	1	3	1	1	3	1	1	3	3	1
3	3	2	2	3	2	2	2	3	2	2	1	3	2	3	2	3	1	2	2	3	2	2	2	3	1	1	1	1	3	3	1
3	3	2	2	3	1	2	2	2	2	2	3	1	1	1	2	1	2	1	2	3	2	2	3	2	1	1	1	1	3	3	1
3	3	2	2	2	1	2	2	1	2	2	1	3	2	1	2	1	1	1	2	3	3	2	3	1	2	3	1	1	3	3	1
1	2	1	2	3	2	2	2	3	2	2	3	2	1	1	2	3	1	2	2	3	3	3	2	1	3	2	1	1	3	3	1
1	1	1	2	3	2	2	2	3	2	2	3	3	1	1	2	2	1	3	2	2	1	1	2	1	1	3	1	1	3	3	1
1	2	1	2	3	2	2	2	3	2	2	1	3	1	1	2	2	1	3	1	3	1	1	2	1	1	2	1	1	3	3	1
1	1	1	2	3	2	2	2	3	2	2	3	3	1	1	1	2	1	2	2	2	2	1	2	2	1	2	1	1	3	3	1
1	1	1	2	3	2	2	2	3	2	2	3	3	1	1	2	2	1	2	2	2	1	1	2	1	1	2	1	1	3	3	1
1	2	1	2	3	2	2	2	3	2	2	1	3	1	1	2	2	2	3	2	3	1	1	2	1	1	2	1	1	3	3	1
2	2	2	1	2	1	2	2	2	2	2	3	3	2	2	1	3	1	3	1	3	1	1	3	2	1	3	1	3	1	1	2
2	3	2	2	2	1	2	2	2	2	2	3	1	2	1	1	2	2	1	2	3	1	1	3	2	2	1	1	3	1	1	2
2	2	2	1	2	1	2	2	2	2	2	2	3	2	1	2	2	1	2	2	3	1	1	3	2	1	3	1	3	1	1	2
2	3	2	1	2	1	2	2	2	2	2	2	3	2	1	1	2	1	3	2	3	1	1	3	2	1	3	1	3	1	1	2
1	1	1	2	2	1	2	2	1	2	2	1	3	2	1	2	2	1	3	2	3	2	1	2	2	1	1	1	3	1	1	2
1	3	2	2	2	1	2	2	1	2	2	1	3	2	1	2	2	1	3	2	3	1	1	3	2	1	1	1	3	1	1	2
2	2	2	2	3	2	2	2	1	2	2	1	3	1	1	2	1	1	1	2	3	1	3	3	3	1	3	1	1	3	3	1
1	3	2	2	2	2	2	2	2	2	2	2	3	1	1	1	1	2	1	2	3	1	3	3	2	1	1	1	1	3	3	1
2	2	2	2	3	2	2	2	3	2	2	3	3	1	1	2	2	1	1	2	3	2	2	3	2	2	2	1	1	3	3	1
2	3	3	2	2	2	2	2	3	2	2	1	3	1	1	2	1	1	1	2	3	2	2	3	2	3	2	1	1	3	3	1
3	3	2	2	3	2	2	2	1	2	2	1	3	1	1	2	2	1	1	2	3	1	2	3	1	1	3	1	1	3	3	1
3	3	3	1	1	1	1	2	1	2	2	3	1	1	2	1	1	1	2	2	3	1	2	2	2	3	2	1	2	3	3	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	Big Analytics Cloud Computing Center
R Framework error message	The field 'Names of X columns' contains a hard return which cannot be interpreted. Please, resubmit your request without hard returns in the 'Names of X columns'.

\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
R Framework error message & The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'. \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=&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] [ROW]

R Framework error message[/C][C]

The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'.

[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=&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
R Framework error message	The field 'Names of X columns' contains a hard return which cannot be interpreted. Please, resubmit your request without hard returns in the 'Names of X columns'.

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.7888	0.8055	1	0.125
Minorderqty excluded	0.8047	0.817	0.9944	0.1375
Lastorderqty excluded	0.7968	0.8091	0.9964	0.1315
Leadtime excluded	0.7916	0.8045	0.9934	0.1281
Qualityproblem excluded	0.7751	0.7833	0.9943	0.1143
Shelflife excluded	0.7706	0.7863	0.9938	0.1162
Storageconditions excluded	0.7759	0.7922	0.9954	0.1199
Deterioration excluded	0.7889	0.806	0.9941	0.1292
Seasonalvariation excluded	0.7908	0.8133	0.9936	0.1347
Variationplandemand excluded	0.7841	0.7993	0.9925	0.1245
Productchanges excluded	0.7967	0.8102	0.9959	0.1323
Environmentallegistlative excluded	0.8034	0.815	0.9952	0.1359
Productlife excluded	0.7676	0.7821	0.9943	0.1136
Impactnewdes excluded	0.7873	0.803	0.9966	0.1271
Considerstock excluded	0.7846	0.7999	0.9967	0.1249
Designproblemfre excluded	0.7926	0.8097	0.9941	0.1319
Bottleneck excluded	0.7885	0.808	0.9962	0.1306
Returnstostore excluded	0.7837	0.8018	1	0.1263
Substitutes excluded	0.7888	0.8079	0.9971	0.1306
Productdiscont excluded	0.7816	0.7997	0.9942	0.1248
Technadvance excluded	0.7776	0.7977	0.9973	0.1234
Lastorderdate excluded	0.7808	0.8013	0.9943	0.1259
Usagepattern excluded	0.7813	0.8004	0.9982	0.1253
Sourceofitem excluded	0.7925	0.8076	0.9941	0.1303
Ageofstock excluded	0.7875	0.8062	0.998	0.1293
Userfactory excluded	0.7957	0.8089	0.9975	0.1313
Valueofmaterial excluded	0.7529	0.779	0.9932	0.1118
Lastissuedate excluded	0.7473	0.7777	1	0.1111
Inventorysystem excluded	0.7473	0.7777	1	0.1111
Qualifications excluded	0.7658	0.7777	1	0.1111
Experience excluded	NA	NA	NA	NA
AgeStorekeeper excluded	NA	NA	NA	NA
Computerliteracy 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 & 0.7888 & 0.8055 & 1 & 0.125 \tabularnewline
Minorderqty excluded & 0.8047 & 0.817 & 0.9944 & 0.1375 \tabularnewline
Lastorderqty excluded & 0.7968 & 0.8091 & 0.9964 & 0.1315 \tabularnewline
Leadtime excluded & 0.7916 & 0.8045 & 0.9934 & 0.1281 \tabularnewline
Qualityproblem excluded & 0.7751 & 0.7833 & 0.9943 & 0.1143 \tabularnewline
Shelflife excluded & 0.7706 & 0.7863 & 0.9938 & 0.1162 \tabularnewline
Storageconditions excluded & 0.7759 & 0.7922 & 0.9954 & 0.1199 \tabularnewline
Deterioration excluded & 0.7889 & 0.806 & 0.9941 & 0.1292 \tabularnewline
Seasonalvariation excluded & 0.7908 & 0.8133 & 0.9936 & 0.1347 \tabularnewline
Variationplandemand excluded & 0.7841 & 0.7993 & 0.9925 & 0.1245 \tabularnewline
Productchanges excluded & 0.7967 & 0.8102 & 0.9959 & 0.1323 \tabularnewline
Environmentallegistlative excluded & 0.8034 & 0.815 & 0.9952 & 0.1359 \tabularnewline
Productlife excluded & 0.7676 & 0.7821 & 0.9943 & 0.1136 \tabularnewline
Impactnewdes excluded & 0.7873 & 0.803 & 0.9966 & 0.1271 \tabularnewline
Considerstock excluded & 0.7846 & 0.7999 & 0.9967 & 0.1249 \tabularnewline
Designproblemfre excluded & 0.7926 & 0.8097 & 0.9941 & 0.1319 \tabularnewline
Bottleneck excluded & 0.7885 & 0.808 & 0.9962 & 0.1306 \tabularnewline
Returnstostore excluded & 0.7837 & 0.8018 & 1 & 0.1263 \tabularnewline
Substitutes excluded & 0.7888 & 0.8079 & 0.9971 & 0.1306 \tabularnewline
Productdiscont excluded & 0.7816 & 0.7997 & 0.9942 & 0.1248 \tabularnewline
Technadvance excluded & 0.7776 & 0.7977 & 0.9973 & 0.1234 \tabularnewline
Lastorderdate excluded & 0.7808 & 0.8013 & 0.9943 & 0.1259 \tabularnewline
Usagepattern excluded & 0.7813 & 0.8004 & 0.9982 & 0.1253 \tabularnewline
Sourceofitem excluded & 0.7925 & 0.8076 & 0.9941 & 0.1303 \tabularnewline
Ageofstock excluded & 0.7875 & 0.8062 & 0.998 & 0.1293 \tabularnewline
Userfactory excluded & 0.7957 & 0.8089 & 0.9975 & 0.1313 \tabularnewline
Valueofmaterial excluded & 0.7529 & 0.779 & 0.9932 & 0.1118 \tabularnewline
Lastissuedate excluded & 0.7473 & 0.7777 & 1 & 0.1111 \tabularnewline
Inventorysystem excluded & 0.7473 & 0.7777 & 1 & 0.1111 \tabularnewline
Qualifications excluded & 0.7658 & 0.7777 & 1 & 0.1111 \tabularnewline
Experience excluded & NA & NA & NA & NA \tabularnewline
AgeStorekeeper excluded & NA & NA & NA & NA \tabularnewline
Computerliteracy
 excluded & NA & NA & NA & NA \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=&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]0.7888[/C][C]0.8055[/C][C]1[/C][C]0.125[/C][/ROW]
[ROW][C]Minorderqty excluded[/C][C]0.8047[/C][C]0.817[/C][C]0.9944[/C][C]0.1375[/C][/ROW]
[ROW][C]Lastorderqty excluded[/C][C]0.7968[/C][C]0.8091[/C][C]0.9964[/C][C]0.1315[/C][/ROW]
[ROW][C]Leadtime excluded[/C][C]0.7916[/C][C]0.8045[/C][C]0.9934[/C][C]0.1281[/C][/ROW]
[ROW][C]Qualityproblem excluded[/C][C]0.7751[/C][C]0.7833[/C][C]0.9943[/C][C]0.1143[/C][/ROW]
[ROW][C]Shelflife excluded[/C][C]0.7706[/C][C]0.7863[/C][C]0.9938[/C][C]0.1162[/C][/ROW]
[ROW][C]Storageconditions excluded[/C][C]0.7759[/C][C]0.7922[/C][C]0.9954[/C][C]0.1199[/C][/ROW]
[ROW][C]Deterioration excluded[/C][C]0.7889[/C][C]0.806[/C][C]0.9941[/C][C]0.1292[/C][/ROW]
[ROW][C]Seasonalvariation excluded[/C][C]0.7908[/C][C]0.8133[/C][C]0.9936[/C][C]0.1347[/C][/ROW]
[ROW][C]Variationplandemand excluded[/C][C]0.7841[/C][C]0.7993[/C][C]0.9925[/C][C]0.1245[/C][/ROW]
[ROW][C]Productchanges excluded[/C][C]0.7967[/C][C]0.8102[/C][C]0.9959[/C][C]0.1323[/C][/ROW]
[ROW][C]Environmentallegistlative excluded[/C][C]0.8034[/C][C]0.815[/C][C]0.9952[/C][C]0.1359[/C][/ROW]
[ROW][C]Productlife excluded[/C][C]0.7676[/C][C]0.7821[/C][C]0.9943[/C][C]0.1136[/C][/ROW]
[ROW][C]Impactnewdes excluded[/C][C]0.7873[/C][C]0.803[/C][C]0.9966[/C][C]0.1271[/C][/ROW]
[ROW][C]Considerstock excluded[/C][C]0.7846[/C][C]0.7999[/C][C]0.9967[/C][C]0.1249[/C][/ROW]
[ROW][C]Designproblemfre excluded[/C][C]0.7926[/C][C]0.8097[/C][C]0.9941[/C][C]0.1319[/C][/ROW]
[ROW][C]Bottleneck excluded[/C][C]0.7885[/C][C]0.808[/C][C]0.9962[/C][C]0.1306[/C][/ROW]
[ROW][C]Returnstostore excluded[/C][C]0.7837[/C][C]0.8018[/C][C]1[/C][C]0.1263[/C][/ROW]
[ROW][C]Substitutes excluded[/C][C]0.7888[/C][C]0.8079[/C][C]0.9971[/C][C]0.1306[/C][/ROW]
[ROW][C]Productdiscont excluded[/C][C]0.7816[/C][C]0.7997[/C][C]0.9942[/C][C]0.1248[/C][/ROW]
[ROW][C]Technadvance excluded[/C][C]0.7776[/C][C]0.7977[/C][C]0.9973[/C][C]0.1234[/C][/ROW]
[ROW][C]Lastorderdate excluded[/C][C]0.7808[/C][C]0.8013[/C][C]0.9943[/C][C]0.1259[/C][/ROW]
[ROW][C]Usagepattern excluded[/C][C]0.7813[/C][C]0.8004[/C][C]0.9982[/C][C]0.1253[/C][/ROW]
[ROW][C]Sourceofitem excluded[/C][C]0.7925[/C][C]0.8076[/C][C]0.9941[/C][C]0.1303[/C][/ROW]
[ROW][C]Ageofstock excluded[/C][C]0.7875[/C][C]0.8062[/C][C]0.998[/C][C]0.1293[/C][/ROW]
[ROW][C]Userfactory excluded[/C][C]0.7957[/C][C]0.8089[/C][C]0.9975[/C][C]0.1313[/C][/ROW]
[ROW][C]Valueofmaterial excluded[/C][C]0.7529[/C][C]0.779[/C][C]0.9932[/C][C]0.1118[/C][/ROW]
[ROW][C]Lastissuedate excluded[/C][C]0.7473[/C][C]0.7777[/C][C]1[/C][C]0.1111[/C][/ROW]
[ROW][C]Inventorysystem excluded[/C][C]0.7473[/C][C]0.7777[/C][C]1[/C][C]0.1111[/C][/ROW]
[ROW][C]Qualifications excluded[/C][C]0.7658[/C][C]0.7777[/C][C]1[/C][C]0.1111[/C][/ROW]
[ROW][C]Experience excluded[/C][C]NA[/C][C]NA[/C][C]NA[/C][C]NA[/C][/ROW]
[ROW][C]AgeStorekeeper excluded[/C][C]NA[/C][C]NA[/C][C]NA[/C][C]NA[/C][/ROW]
[ROW][C]Computerliteracy
 excluded[/C][C]NA[/C][C]NA[/C][C]NA[/C][C]NA[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=&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	0.7888	0.8055	1	0.125
Minorderqty excluded	0.8047	0.817	0.9944	0.1375
Lastorderqty excluded	0.7968	0.8091	0.9964	0.1315
Leadtime excluded	0.7916	0.8045	0.9934	0.1281
Qualityproblem excluded	0.7751	0.7833	0.9943	0.1143
Shelflife excluded	0.7706	0.7863	0.9938	0.1162
Storageconditions excluded	0.7759	0.7922	0.9954	0.1199
Deterioration excluded	0.7889	0.806	0.9941	0.1292
Seasonalvariation excluded	0.7908	0.8133	0.9936	0.1347
Variationplandemand excluded	0.7841	0.7993	0.9925	0.1245
Productchanges excluded	0.7967	0.8102	0.9959	0.1323
Environmentallegistlative excluded	0.8034	0.815	0.9952	0.1359
Productlife excluded	0.7676	0.7821	0.9943	0.1136
Impactnewdes excluded	0.7873	0.803	0.9966	0.1271
Considerstock excluded	0.7846	0.7999	0.9967	0.1249
Designproblemfre excluded	0.7926	0.8097	0.9941	0.1319
Bottleneck excluded	0.7885	0.808	0.9962	0.1306
Returnstostore excluded	0.7837	0.8018	1	0.1263
Substitutes excluded	0.7888	0.8079	0.9971	0.1306
Productdiscont excluded	0.7816	0.7997	0.9942	0.1248
Technadvance excluded	0.7776	0.7977	0.9973	0.1234
Lastorderdate excluded	0.7808	0.8013	0.9943	0.1259
Usagepattern excluded	0.7813	0.8004	0.9982	0.1253
Sourceofitem excluded	0.7925	0.8076	0.9941	0.1303
Ageofstock excluded	0.7875	0.8062	0.998	0.1293
Userfactory excluded	0.7957	0.8089	0.9975	0.1313
Valueofmaterial excluded	0.7529	0.779	0.9932	0.1118
Lastissuedate excluded	0.7473	0.7777	1	0.1111
Inventorysystem excluded	0.7473	0.7777	1	0.1111
Qualifications excluded	0.7658	0.7777	1	0.1111
Experience excluded	NA	NA	NA	NA
AgeStorekeeper excluded	NA	NA	NA	NA
Computerliteracy excluded	NA	NA	NA	NA

Parameters (Session):

par1 = TRUE ;

Parameters (R input):

par1 = TRUE ;

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

par1 <- 'TRUE'
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