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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 computationWed, 10 Dec 2014 12:26:08 +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/10/t1418214437y16veyfpfpuvdj4.htm/, Retrieved Sun, 19 May 2024 16:37:24 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=265018, Retrieved Sun, 19 May 2024 16:37:24 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact52

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [] [2014-12-10 12:26:08] [80e094d39007183c022472d38ca26b6f] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
93,75	42,50	60,00	83,00
84,38	37,50	40,00	63,00
56,25	30,00	80,00	94,50
87,50	52,50	40,00	58,00
84,38	52,50	40,00	73,00
87,50	47,50	40,00	69,25
65,63	37,50	60,00	74,25
68,75	25,00	40,00	58,75
62,50	50,00	60,00	92,25
71,88	30,00	40,00	79,50
56,25	35,00	80,00	99,50
56,25	35,00	20,00	54,75
78,13	40,00	80,00	92,25
78,13	50,00	60,00	75,50
78,13	27,50	60,00	75,00
75,00	30,00	40,00	56,75
40,63	47,50	60,00	79,75
53,13	40,00	60,00	90,50
12,50	35,00	80,00	73,00
50,00	45,00	60,00	88,00
65,63	40,00	80,00	76,75
62,50	40,00	40,00	67,00
68,75	45,00	60,00	69,50
0,00	47,50	60,00	76,25
56,25	35,00	80,00	64,50
90,63	40,00	60,00	80,50
47	18	60	87
69	43	60	66
68,75	32,50	60,00	60,75
53,13	20,00	20,00	63,00
84,38	52,50	20,00	51,75
46,88	42,50	60,00	77,00
81,25	47,50	40,00	48,00
56,25	30,00	60,00	91,00
84,38	37,50	40,00	68,00
53,13	45,00	40,00	74,25
59,38	42,50	40,00	70,50
40,63	35,00	40,00	74,50
50,00	47,50	60,00	81,25
6,25	40,00	40,00	68,00
81,25	47,50	60,00	78,25
68,75	45,00	40,00	73,00
71,88	50,00	20,00	63,25
56,25	42,50	20,00	59,50
56,25	45,00	80,00	96,00
59,38	37,50	60,00	83,00
68,75	45,00	20,00	56,00
43,75	40,00	40,00	66,00
71,88	40,00	60,00	79,25
62,50	45,00	20,00	55,75
40,63	25,00	60,00	78,25
50,00	35,00	20,00	38,25
21,88	27,50	20,00	76,00
53,13	10,00	40,00	78,00
59,38	42,50	40,00	65,50
71,88	45,00	20,00	59,25
59,38	40,00	40,00	62,00
50,00	50,00	40,00	57,00
62,50	15,00	60,00	74,50
78,13	27,50	80,00	99,50
53,13	30,00	40,00	56,00
37,50	25,00	60,00	73,00
75,00	40,00	40,00	73,75
43,75	37,50	40,00	75,75
56,25	42,50	60,00	84,25
59,38	52,50	40,00	39,25
50,00	40,00	60,00	63,00
59,38	47,50	60,00	39,25
12,50	45,00	20,00	54,75
62,50	50,00	40,00	61,75
75,00	30,00	40,00	49,75
53,13	42,50	60,00	74,50
68,75	35,00	60,00	83,25
59,38	25,00	40,00	67,00
68,75	7,50	40,00	69,75
71,88	40,00	60,00	78,50
53,13	35,00	60,00	84,25
75,00	47,50	20,00	54,75
62,50	30,00	60,00	76,75
78,13	45,00	40,00	61,00
62,50	37,50	40,00	75,50
65,63	42,50	60,00	88,75
68,75	32,50	60,00	76,00
78,13	42,50	60,00	83,25
87,50	40,00	20,00	40,50
90,63	35,00	20,00	21,75
62,50	47,50	20,00	63,50
62,50	35,00	80,00	90,50
59,38	17,50	80,00	89,25
59,38	32,50	80,00	85,50
81,25	32,50	80,00	95,50
31,25	42,50	80,00	80,50
53,13	20,00	40,00	66,75
93,75	42,50	80,00	92,00
68,75	40,00	20,00	73,50
71,88	42,50	60,00	53,00
50,00	35,00	60,00	63,00
56,25	42,50	80,00	81,00
78,13	37,50	60,00	68,00
56,25	42,50	60,00	70,50
75,00	35,00	60,00	72,50
71,88	50,00	80,00	80,75
75,00	37,50	60,00	73,75
46,88	25,00	60,00	74,00
62,50	40,00	40,00	62,25
81,25	32,50	40,00	63,25
71,88	40,00	60,00	86,75
71,88	45,00	20,00	43,00
68,75	15,00	80,00	92,00
46,88	2,50	60,00	80,50
68,75	32,50	80,00	88,75
31,25	22,50	80,00	76,25
62,50	40,00	80,00	88,25
71,88	37,50	80,00	78,00
84,38	47,50	80,00	81,75
71,88	32,50	80,00	88,25
78,13	30,00	60,00	68,00
62,50	40,00	80,00	58,50
75,00	25,00	60,00	71,75
71,88	2,50	80,00	73,75
68,75	37,50	80,00	91,25
65,63	45,00	80,00	49,50
78,13	47,50	60,00	80,00
84,38	40,00	80,00	91,25
71,88	35,00	80,00	84,25
71,88	47,50	80,00	94,75
59,38	20,00	60,00	78,00
46,88	30,00	80,00	85,50
62,50	40,00	20,00	80,50
50,00	27,50	80,00	77,00
78,13	37,50	80,00	77,00
78,13	35,00	60,00	66,75
59,38	40,00	80,00	95,50
50,00	35,00	20,00	38,00
59,38	35,00	80,00	95,50
59,38	30,00	80,00	73,75
71,88	50,00	80,00	96,25
65,63	12,50	80,00	68,00
59,38	40,00	80,00	63,75
62,50	42,50	20,00	49,25
9,38	30,00	80,00	76,25
71,88	45,00	60,00	59,50
46,88	27,50	80,00	81,75
75,00	45,00	60,00	62,00
75,00	42,50	80,00	71,75
75,00	45,00	80,00	90,75
87,50	50,00	80,00	88,75
71,88	50,00	60,00	61,75
78,13	37,50	80,00	78,00
78,13	37,50	80,00	96,50
62,50	30,00	80,00	85,50
78,13	50,00	60,00	92,00
71,88	50,00	80,00	95,25
62,50	25,00	80,00	92,75
50,00	22,50	80,00	95,50
71,88	37,50	80,00	64,25
34,38	27,50	40,00	47,50
71,88	47,50	20,00	22,50
90,63	32,50	80,00	68,00
50,00	32,50	40,00	58,50
71,88	50,00	60,00	66,75
62,50	22,50	80,00	88,75
12,50	22,50	80,00	88,00
75,00	2,50	60,00	70,25
50,00	22,50	80,00	80,50
9,38	27,50	80,00	66,75
71,88	42,50	80,00	59,25
62,50	27,50	40,00	59,75
59,38	25,00	80,00	66,00
75,00	17,50	40,00	38,50
84,38	25,00	60,00	73,00

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'Gwilym Jenkins' @ jenkins.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 & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=265018&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]'Gwilym Jenkins' @ jenkins.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=265018&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=265018&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'Gwilym Jenkins' @ jenkins.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.49260.50040.52980.2003
NUMERACYTSCORE excluded0.61020.58170.57180.3167
EXAMENSCORE excluded0.46990.47840.51540.2341
PEERSCORE excluded0.25590.29150.22460.1206
TOTAALSCORE excluded0.23850.30890.24430.1297

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.4926 & 0.5004 & 0.5298 & 0.2003 \tabularnewline
NUMERACYTSCORE excluded & 0.6102 & 0.5817 & 0.5718 & 0.3167 \tabularnewline
EXAMENSCORE excluded & 0.4699 & 0.4784 & 0.5154 & 0.2341 \tabularnewline
PEERSCORE excluded & 0.2559 & 0.2915 & 0.2246 & 0.1206 \tabularnewline
TOTAALSCORE excluded & 0.2385 & 0.3089 & 0.2443 & 0.1297 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=265018&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]0.4926[/C][C]0.5004[/C][C]0.5298[/C][C]0.2003[/C][/ROW]
[ROW][C]NUMERACYTSCORE excluded[/C][C]0.6102[/C][C]0.5817[/C][C]0.5718[/C][C]0.3167[/C][/ROW]
[ROW][C]EXAMENSCORE excluded[/C][C]0.4699[/C][C]0.4784[/C][C]0.5154[/C][C]0.2341[/C][/ROW]
[ROW][C]PEERSCORE excluded[/C][C]0.2559[/C][C]0.2915[/C][C]0.2246[/C][C]0.1206[/C][/ROW]
[ROW][C]TOTAALSCORE excluded[/C][C]0.2385[/C][C]0.3089[/C][C]0.2443[/C][C]0.1297[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=265018&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=265018&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 itmes0.49260.50040.52980.2003
NUMERACYTSCORE excluded0.61020.58170.57180.3167
EXAMENSCORE excluded0.46990.47840.51540.2341
PEERSCORE excluded0.25590.29150.22460.1206
TOTAALSCORE excluded0.23850.30890.24430.1297


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):
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')