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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_hypothesismeanu.wasp
Title produced by softwareTesting Mean with unknown Variance - Critical Value
Date of computationTue, 26 Oct 2010 14:45:48 +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/2010/Oct/26/t1288104268dygqqsevxb0dyw9.htm/, Retrieved Sun, 28 Apr 2024 06:33:25 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=89224, Retrieved Sun, 28 Apr 2024 06:33:25 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact128

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Factor Analysis] [Sleep in Mammals ...] [2010-03-21 11:39:53] [b98453cac15ba1066b407e146608df68]
- RMPD  [Testing Mean with unknown Variance - Critical Value] [Hypothesis Test a...] [2010-10-19 11:45:26] [b98453cac15ba1066b407e146608df68]
-   PD    [Testing Mean with unknown Variance - Critical Value] [] [2010-10-25 21:14:41] [5b5e2f42cf221276958b46f2b8444c18]
F             [Testing Mean with unknown Variance - Critical Value] [ws4q4] [2010-10-26 14:45:48] [5f761c4a622da19727fd2adf71158b48] [Current]
Feedback Forum
2010-10-31 09:53:46 [48eb36e2c01435ad7e4ea7854a9d98fe] [reply] 
De student heeft hier gewerkt met de verkeerde gegevens, namelijk met de gegevens van 'Extrinsic motivation - external regulation' ipv 'Intrinsic Motivation – To Know'. Hierdoor werden de verkeerde conclusies getrokken ondanks het feit dat de gedachtengang van de student correct is. Toegepast op de juiste gegevens kunnen we stellen dat deze niet significant verschilt van 20, omdat 20 in het betrouwbaarheidsinterval gelegen is.

http://www.freestatistics.org/blog/date/2010/Oct/25/t12880398709c4gejh1rfkhfp0.htm/
2010-11-01 11:23:58 [201022de16daa1dc0c172603d7d3cd57] [reply] 
De student heeft verkeerde gegevens gebruikt. Hij heeft wel de juiste test gebruikt en de uitkomst van zijn berekening heeft hij/zij goed geïnterpreteerd.

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
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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'Gwilym Jenkins' @ 72.249.127.135
R Framework error message
Warning: there are blank lines in the 'Data' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.

\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 & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
R Framework error message & 
Warning: there are blank lines in the 'Data' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.
 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=89224&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]'Gwilym Jenkins' @ 72.249.127.135[/C][/ROW]
[ROW][C]R Framework error message[/C][C]
Warning: there are blank lines in the 'Data' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.
[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=89224&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=89224&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'Gwilym Jenkins' @ 72.249.127.135
R Framework error message
Warning: there are blank lines in the 'Data' field.
Please, use NA for missing data - blank lines are simply
 deleted and are NOT treated as missing values.






Hypothesis Test about the Mean - Confidence Interval
Sample size98
Sample standard deviation3.76426384647942
Confidence0.95
Null hypothesis20
Sample Mean22.5204081632653
2-sided Confidence Interval[ 21.7657210017262 , 23.2750953248044 ]
Left-sided Confidence Interval[ 21.8889246374658 , +inf ]
Right-sided Confidence Interval[ -inf, 23.1518916890649 ]

\begin{tabular}{lllllllll}
\hline
Hypothesis Test about the Mean - Confidence Interval \tabularnewline
Sample size & 98 \tabularnewline
Sample standard deviation & 3.76426384647942 \tabularnewline
Confidence & 0.95 \tabularnewline
Null hypothesis & 20 \tabularnewline
Sample Mean & 22.5204081632653 \tabularnewline
2-sided Confidence Interval & [ 21.7657210017262 , 23.2750953248044 ] \tabularnewline
Left-sided Confidence Interval & [ 21.8889246374658 , +inf ] \tabularnewline
Right-sided Confidence Interval & [ -inf,  23.1518916890649 ] \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=89224&T=1

[TABLE]
[ROW][C]Hypothesis Test about the Mean - Confidence Interval[/C][/ROW]
[ROW][C]Sample size[/C][C]98[/C][/ROW]
[ROW][C]Sample standard deviation[/C][C]3.76426384647942[/C][/ROW]
[ROW][C]Confidence[/C][C]0.95[/C][/ROW]
[ROW][C]Null hypothesis[/C][C]20[/C][/ROW]
[ROW][C]Sample Mean[/C][C]22.5204081632653[/C][/ROW]
[ROW][C]2-sided Confidence Interval[/C][C][ 21.7657210017262 , 23.2750953248044 ][/C][/ROW]
[ROW][C]Left-sided Confidence Interval[/C][C][ 21.8889246374658 , +inf ][/C][/ROW]
[ROW][C]Right-sided Confidence Interval[/C][C][ -inf,  23.1518916890649 ][/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=89224&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=89224&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:

Hypothesis Test about the Mean - Confidence Interval
Sample size98
Sample standard deviation3.76426384647942
Confidence0.95
Null hypothesis20
Sample Mean22.5204081632653
2-sided Confidence Interval[ 21.7657210017262 , 23.2750953248044 ]
Left-sided Confidence Interval[ 21.8889246374658 , +inf ]
Right-sided Confidence Interval[ -inf, 23.1518916890649 ]


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 0.95 ; par2 = 20 ;
Parameters (R input):
par1 = 0.95 ; par2 = 20 ;
R code (references can be found in the software module):
par1 <- as.numeric(par1)
par2 <- as.numeric(par2)
len <- length(x)
df <- len - 1
sd <- sd(x)
mx <- mean(x)
load(file='createtable')
delta2 <- abs(qt((1-par1)/2,df)) * sd / sqrt(len)
delta1 <- abs(qt((1-par1),df)) * sd / sqrt(len)
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Hypothesis Test about the Mean - Confidence Interval',2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Sample size',header=TRUE)
a<-table.element(a,len)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Sample standard deviation',header=TRUE)
a<-table.element(a,sd)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Confidence',header=TRUE)
a<-table.element(a,par1)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Null hypothesis',header=TRUE)
a<-table.element(a,par2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Sample Mean',header=TRUE)
a<-table.element(a,mx)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'2-sided Confidence Interval',header=TRUE)
dum <- paste('[',mx-delta2)
dum <- paste(dum,',')
dum <- paste(dum,mx+delta2)
dum <- paste(dum,']')
a<-table.element(a,dum)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Left-sided Confidence Interval',header=TRUE)
dum <- paste('[',mx-delta1)
dum <- paste(dum,', +inf ]')
a<-table.element(a,dum)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Right-sided Confidence Interval',header=TRUE)
dum <- paste('[ -inf, ',mx+delta1)
dum <- paste(dum,']')
a<-table.element(a,dum)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')