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Author's title

Author

*The author of this computation has been verified*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Fri, 15 Dec 2017 10:30:22 +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/15/t15133306832j8refbtv9osef7.htm/, Retrieved Wed, 15 May 2024 18:01:08 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=309628, Retrieved Wed, 15 May 2024 18:01:08 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

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

-       [Cronbach Alpha] [Cronbach Alpha - ...] [2017-12-15 09:30:22] [228f385b091a4ec8014a0b8722ae7714] [Current]

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Dataseries X:

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Histogram

Boxplots

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

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=309628&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=309628&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=309628&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	0.8823	0.884	0.883	0.5212
simple_to_use excluded	0.8615	0.8643	0.8581	0.5149
effectively_complete_work excluded	0.8661	0.8672	0.8622	0.5212
complete_work_quickly excluded	0.8604	0.8617	0.8555	0.5095
complete_work_efficiently excluded	0.8648	0.8657	0.8565	0.518
comfortable_using_website excluded	0.8579	0.861	0.8567	0.5079
easy_to_learn excluded	0.8778	0.8792	0.8688	0.5481
quickly_productive excluded	0.8682	0.8708	0.8666	0.5291

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8823 & 0.884 & 0.883 & 0.5212 \tabularnewline
simple_to_use excluded & 0.8615 & 0.8643 & 0.8581 & 0.5149 \tabularnewline
effectively_complete_work excluded & 0.8661 & 0.8672 & 0.8622 & 0.5212 \tabularnewline
complete_work_quickly excluded & 0.8604 & 0.8617 & 0.8555 & 0.5095 \tabularnewline
complete_work_efficiently excluded & 0.8648 & 0.8657 & 0.8565 & 0.518 \tabularnewline
comfortable_using_website excluded & 0.8579 & 0.861 & 0.8567 & 0.5079 \tabularnewline
easy_to_learn excluded & 0.8778 & 0.8792 & 0.8688 & 0.5481 \tabularnewline
quickly_productive excluded & 0.8682 & 0.8708 & 0.8666 & 0.5291 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=309628&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]0.8823[/C][C]0.884[/C][C]0.883[/C][C]0.5212[/C][/ROW]
[ROW][C]simple_to_use excluded[/C][C]0.8615[/C][C]0.8643[/C][C]0.8581[/C][C]0.5149[/C][/ROW]
[ROW][C]effectively_complete_work excluded[/C][C]0.8661[/C][C]0.8672[/C][C]0.8622[/C][C]0.5212[/C][/ROW]
[ROW][C]complete_work_quickly excluded[/C][C]0.8604[/C][C]0.8617[/C][C]0.8555[/C][C]0.5095[/C][/ROW]
[ROW][C]complete_work_efficiently excluded[/C][C]0.8648[/C][C]0.8657[/C][C]0.8565[/C][C]0.518[/C][/ROW]
[ROW][C]comfortable_using_website excluded[/C][C]0.8579[/C][C]0.861[/C][C]0.8567[/C][C]0.5079[/C][/ROW]
[ROW][C]easy_to_learn excluded[/C][C]0.8778[/C][C]0.8792[/C][C]0.8688[/C][C]0.5481[/C][/ROW]
[ROW][C]quickly_productive excluded[/C][C]0.8682[/C][C]0.8708[/C][C]0.8666[/C][C]0.5291[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=309628&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=309628&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	0.8823	0.884	0.883	0.5212
simple_to_use excluded	0.8615	0.8643	0.8581	0.5149
effectively_complete_work excluded	0.8661	0.8672	0.8622	0.5212
complete_work_quickly excluded	0.8604	0.8617	0.8555	0.5095
complete_work_efficiently excluded	0.8648	0.8657	0.8565	0.518
comfortable_using_website excluded	0.8579	0.861	0.8567	0.5079
easy_to_learn excluded	0.8778	0.8792	0.8688	0.5481
quickly_productive excluded	0.8682	0.8708	0.8666	0.5291

Parameters (Session):

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