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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 Oct 2012 03:26:03 -0400
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2012/Oct/16/t1350372375p49sonw83p8yw1s.htm/, Retrieved Tue, 30 Apr 2024 13:31:32 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=178244, Retrieved Tue, 30 Apr 2024 13:31:32 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact141

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Cronbach Alpha] [Intrinsic Motivat...] [2010-10-12 11:46:14] [b98453cac15ba1066b407e146608df68]
- R  D    [Cronbach Alpha] [] [2012-10-16 07:26:03] [65d96969290bbe21bcec2c9fb9795198] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
24	20	24
27	28	22
28	19	23
27	22	20
24	16	25
23	18	23
24	25	27
27	17	27
27	14	22
28	11	24
27	27	25
23	20	22
24	22	28
28	22	28
27	21	27
25	23	25
19	17	16
24	24	28
20	14	21
28	17	24
26	23	27
23	24	14
23	24	14
20	8	27
11	22	20
24	23	21
25	25	22
23	21	21
18	24	12
20	15	20
20	22	24
24	21	19
23	25	28
25	16	23
28	28	27
26	23	22
26	21	27
23	21	26
22	26	22
24	22	21
21	21	19
20	18	24
22	12	19
20	25	26
25	17	22
20	24	28
22	15	21
23	13	23
25	26	28
23	16	10
23	24	24
22	21	21
24	20	21
25	14	24
21	25	24
12	25	25
17	20	25
20	22	23
23	20	21
23	26	16
20	18	17
28	22	25
24	24	24
24	17	23
24	24	25
24	20	23
28	19	28
25	20	26
21	15	22
25	23	19
25	26	26
18	22	18
17	20	18
26	24	25
28	26	27
21	21	12
27	25	15
22	13	21
21	20	23
25	22	22
22	23	21
23	28	24
26	22	27
19	20	22
25	6	28
21	21	26
13	20	10
24	18	19
25	23	22
26	20	21
25	24	24
25	22	25
22	21	21
21	18	20
23	21	21
25	23	24
24	23	23
21	15	18
21	21	24
25	24	24
22	23	19
20	21	20
20	21	18
23	20	20
28	11	27
23	22	23
28	27	26
24	25	23
18	18	17
20	20	21
28	24	25
21	10	23
21	27	27
25	21	24
19	21	20
18	18	27
21	15	21
22	24	24
24	22	21
15	14	15
28	28	25
26	18	25
23	26	22
26	17	24
20	19	21
22	22	22
20	18	23
23	24	22
22	15	20
24	18	23
23	26	25
22	11	23
26	26	22
23	21	25
27	23	26
23	23	22
21	15	24
26	22	24
23	26	25
21	16	20
27	20	26
19	18	21
23	22	26
25	16	21
23	19	22
22	20	16
22	19	26
25	23	28
25	24	18
28	25	25
28	21	23
20	21	21
25	23	20
19	27	25
25	23	22
22	18	21
18	16	16
20	16	18

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 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=178244&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=178244&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=178244&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 time1 seconds
R Server'Sir Maurice George Kendall' @ kendall.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.46670.48980.41620.2424
E1 excluded0.24470.24670.14070.1407
E2 excluded0.58410.58790.41640.4164
E3 excluded0.28180.29090.17020.1702

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.4667 & 0.4898 & 0.4162 & 0.2424 \tabularnewline
E1 excluded & 0.2447 & 0.2467 & 0.1407 & 0.1407 \tabularnewline
E2 excluded & 0.5841 & 0.5879 & 0.4164 & 0.4164 \tabularnewline
E3 excluded & 0.2818 & 0.2909 & 0.1702 & 0.1702 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=178244&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]0.4667[/C][C]0.4898[/C][C]0.4162[/C][C]0.2424[/C][/ROW]
[ROW][C]E1 excluded[/C][C]0.2447[/C][C]0.2467[/C][C]0.1407[/C][C]0.1407[/C][/ROW]
[ROW][C]E2 excluded[/C][C]0.5841[/C][C]0.5879[/C][C]0.4164[/C][C]0.4164[/C][/ROW]
[ROW][C]E3 excluded[/C][C]0.2818[/C][C]0.2909[/C][C]0.1702[/C][C]0.1702[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=178244&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=178244&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 itmes0.46670.48980.41620.2424
E1 excluded0.24470.24670.14070.1407
E2 excluded0.58410.58790.41640.4164
E3 excluded0.28180.29090.17020.1702


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
R code (references can be found in the software module):
library(psych)
z <- t(y)
(r <- alpha(z))
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')