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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_cronbach.wasp
Title produced by softwareCronbach Alpha
Date of computationTue, 16 Dec 2014 13:00:37 +0000
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2014/Dec/16/t1418734902byv99ccis90btsv.htm/, Retrieved Thu, 16 May 2024 12:02:09 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=269461, Retrieved Thu, 16 May 2024 12:02:09 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact57

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [Parents expectati...] [2014-12-16 13:00:37] [ecc8a223a6799628ce1dc096d32923a0] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
4 4 1 4
2 3 2 2
4 3 2 2
4 5 2 5
3 1 2 2
4 2 2 3
4 4 2 2
4 4 3 4
2 2 2 3
4 2 2 3
5 2 1 1
2 4 2 2
4 2 4 4
4 3 2 4
1 2 1 1
5 4 3 5
4 4 5 5
3 4 2 2
4 4 3 3
2 3 2 2
3 2 2 4
4 4 3 4
4 4 3 4
2 3 2 3
4 4 3 3
4 4 4 4
2 3 2 4
2 2 2 2
4 2 2 3
4 4 1 1
4 4 2 4
2 5 1 2
3 4 2 2
5 5 3 5
2 4 1 1
3 2 2 2
5 4 2 4
4 4 4 2
3 4 2 3
2 2 3 1
2 3 1 3
2 4 2 2
5 5 2 4
2 4 2 2
2 3 2 2
5 4 2 3
2 2 1 2
3 4 2 2
5 4 4 4
3 4 2 2
2 2 1 1
2 2 2 3
1 3 1 1
4 4 1 2
2 2 1 1
4 2 2 2
4 4 2 4
2 2 2 2
3 2 1 1
4 4 2 2
2 3 1 2
3 5 1 2
5 4 3 3
2 3 1 2
4 4 2 3
3 3 1 1
2 2 2 3
4 2 1 1
4 5 2 2
2 1 1 1
4 4 2 2
4 4 1 3
3 4 2 2
3 3 3 2
4 5 1 1
4 4 1 2
3 2 1 4
3 4 2 3
4 4 1 3
3 2 1 1
2 2 1 1
3 1 1 2
2 3 1 2
2 5 2 2
3 4 3 3
1 3 4 2
3 4 2 2
4 2 2 2
4 4 4 4
4 4 1 2
4 5 1 3
2 4 2 2
5 4 3 3
4 4 2 2
3 4 2 2
2 2 2 3
4 4 2 3
4 2 1 2
2 2 1 2
4 1 1 2
4 4 3 3
4 5 2 2
2 4 2 2
4 3 4 2
2 2 1 2
4 2 4 3
3 2 2 2
4 4 2 4
2 1 1 1
3 4 2 2
2 2 1 1

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time0 seconds
R Server'Sir Ronald Aylmer Fisher' @ fisher.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 & 'Sir Ronald Aylmer Fisher' @ fisher.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269461&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]'Sir Ronald Aylmer Fisher' @ fisher.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269461&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269461&T=0

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time0 seconds
R Server'Sir Ronald Aylmer Fisher' @ fisher.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.7050.70750.66370.3769
PERF1 excluded0.61970.62750.55490.3596
PERF11 excluded0.70380.70460.62880.443
PERF15 excluded0.66090.66260.57450.3957
PERF20 excluded0.57310.57320.47930.3092

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.705 & 0.7075 & 0.6637 & 0.3769 \tabularnewline
PERF1 excluded & 0.6197 & 0.6275 & 0.5549 & 0.3596 \tabularnewline
PERF11 excluded & 0.7038 & 0.7046 & 0.6288 & 0.443 \tabularnewline
PERF15 excluded & 0.6609 & 0.6626 & 0.5745 & 0.3957 \tabularnewline
PERF20 excluded & 0.5731 & 0.5732 & 0.4793 & 0.3092 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=269461&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]0.705[/C][C]0.7075[/C][C]0.6637[/C][C]0.3769[/C][/ROW]
[ROW][C]PERF1 excluded[/C][C]0.6197[/C][C]0.6275[/C][C]0.5549[/C][C]0.3596[/C][/ROW]
[ROW][C]PERF11 excluded[/C][C]0.7038[/C][C]0.7046[/C][C]0.6288[/C][C]0.443[/C][/ROW]
[ROW][C]PERF15 excluded[/C][C]0.6609[/C][C]0.6626[/C][C]0.5745[/C][C]0.3957[/C][/ROW]
[ROW][C]PERF20 excluded[/C][C]0.5731[/C][C]0.5732[/C][C]0.4793[/C][C]0.3092[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=269461&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=269461&T=1

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.7050.70750.66370.3769
PERF1 excluded0.61970.62750.55490.3596
PERF11 excluded0.70380.70460.62880.443
PERF15 excluded0.66090.66260.57450.3957
PERF20 excluded0.57310.57320.47930.3092


Figures (Output of Computation)

Input Parameters & R Code

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')