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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 16:51:02 +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/t1288111791j1sowtasbja5emx.htm/, Retrieved Sun, 28 Apr 2024 14:33:07 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=89387, Retrieved Sun, 28 Apr 2024 14:33:07 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact157

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
F       [Testing Mean with unknown Variance - Critical Value] [Question 2 - Trea...] [2010-10-26 16:51:02] [bff44ea937c3f909b1dc9a8bfab919e2] [Current]
- RMP     [Population Mean Test] [WS4 - Task 2 - Th...] [2010-10-26 19:01:40] [19f9551d4d95750ef21e9f3cf8fe2131]
-   PD      [Population Mean Test] [WS4 - Task 7 - sm...] [2010-10-26 20:01:43] [19f9551d4d95750ef21e9f3cf8fe2131]
- RM D        [One Sample Tests about the Mean] [] [2011-10-23 13:11:24] [c6dda33d269efe9a48a310f0c0798534]
- R P           [One Sample Tests about the Mean] [Vraag 7] [2011-10-25 08:28:26] [4cb29c3614c5a92c2f34c46f79abd839]
- R PD          [One Sample Tests about the Mean] [Vraag 7 - Mannen] [2011-10-25 08:30:22] [4cb29c3614c5a92c2f34c46f79abd839]
-   P           [One Sample Tests about the Mean] [WS 4 Question 7] [2011-10-25 09:05:32] [59e9c089bdd600b584669dddc48fbcc3]
-   PD          [One Sample Tests about the Mean] [Workshop 5 - Task 7] [2011-10-25 16:47:47] [8b13b85c94b9a060d82f72930775ea89]
- R  D            [One Sample Tests about the Mean] [Workshop 5 -Task 7] [2011-10-25 16:58:07] [8b13b85c94b9a060d82f72930775ea89]
-   P           [One Sample Tests about the Mean] [P-Value Females] [2011-10-25 18:24:56] [147523945ddfd9cf10d509b57b5cab55]
-    D      [Population Mean Test] [] [2011-10-23 12:23:26] [74be16979710d4c4e7c6647856088456]
-    D        [Population Mean Test] [] [2011-10-23 12:28:56] [74be16979710d4c4e7c6647856088456]
-    D          [Population Mean Test] [] [2011-10-23 12:30:58] [74be16979710d4c4e7c6647856088456]
- RMPD          [Testing Mean with unknown Variance - Critical Value] [Vraag 2 ] [2011-10-25 15:23:52] [4cb29c3614c5a92c2f34c46f79abd839]
- RMPD          [Testing Mean with unknown Variance - Critical Value] [Vraag 2] [2011-10-25 15:35:39] [4cb29c3614c5a92c2f34c46f79abd839]
- RMPD          [Testing Mean with unknown Variance - Critical Value] [Vraag 2] [2011-10-25 15:38:51] [4cb29c3614c5a92c2f34c46f79abd839]
- RMPD          [Testing Mean with unknown Variance - Critical Value] [Vraag 2] [2011-10-25 15:49:00] [4cb29c3614c5a92c2f34c46f79abd839]
- RM D        [One Sample Tests about the Mean] [Workshop 5 - Task 2] [2011-10-25 17:30:55] [8b13b85c94b9a060d82f72930775ea89]
- R  D          [One Sample Tests about the Mean] [Workshop 5 - Task 2] [2011-10-25 17:37:26] [8b13b85c94b9a060d82f72930775ea89]
- R  D          [One Sample Tests about the Mean] [Workshop 5 - Task 2] [2011-10-25 17:42:50] [8b13b85c94b9a060d82f72930775ea89]
- RMPD    [Population Mean Test] [WS4 - Task 2 - Be...] [2010-10-26 19:04:38] [19f9551d4d95750ef21e9f3cf8fe2131]
- RMPD    [Population Mean Test] [WS4 - Task 2 - Be...] [2010-10-26 19:06:12] [19f9551d4d95750ef21e9f3cf8fe2131]
Feedback Forum
2010-11-02 16:19:54 [1951de723fd2749e12bc2f1a75bd3e74] [reply] 
We gaan de hypotheses testen door een t-verdeling te nemen. Two sided test
Voor treatment T zien we volgende gegevens:
Sample size: 35
Sample SD : 0,5
Confidence : 0,95 (omdat we 5% type 1 error hebben)
Null hypothesis : 0
Als nul buiten betrouwbaarheidsinterval [ 0.34 , 0.68 ] (Het is een tweezijdige toets dus we kijken naar beide kanten van het interval) ligt dan moeten we Null hypothese verwerpen. 51 % (sample mean) van de leerlingen leert iets dankzij treatment T. We verwerpen de hypothese.

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Dataset

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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 Ronald Aylmer Fisher' @ 193.190.124.24

\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 Ronald Aylmer Fisher' @ 193.190.124.24 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=89387&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 Ronald Aylmer Fisher' @ 193.190.124.24[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=89387&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=89387&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 Ronald Aylmer Fisher' @ 193.190.124.24






Hypothesis Test about the Mean - Confidence Interval
Sample size37
Sample standard deviation0.515524747966347
Confidence0.95
Null hypothesis0
Sample Mean0.108108108108108
2-sided Confidence Interval[ -0.063776400534094 , 0.27999261675031 ]
Left-sided Confidence Interval[ -0.0349780717693694 , +inf ]
Right-sided Confidence Interval[ -inf, 0.251194287985586 ]

\begin{tabular}{lllllllll}
\hline
Hypothesis Test about the Mean - Confidence Interval \tabularnewline
Sample size & 37 \tabularnewline
Sample standard deviation & 0.515524747966347 \tabularnewline
Confidence & 0.95 \tabularnewline
Null hypothesis & 0 \tabularnewline
Sample Mean & 0.108108108108108 \tabularnewline
2-sided Confidence Interval & [ -0.063776400534094 , 0.27999261675031 ] \tabularnewline
Left-sided Confidence Interval & [ -0.0349780717693694 , +inf ] \tabularnewline
Right-sided Confidence Interval & [ -inf,  0.251194287985586 ] \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=89387&T=1

[TABLE]
[ROW][C]Hypothesis Test about the Mean - Confidence Interval[/C][/ROW]
[ROW][C]Sample size[/C][C]37[/C][/ROW]
[ROW][C]Sample standard deviation[/C][C]0.515524747966347[/C][/ROW]
[ROW][C]Confidence[/C][C]0.95[/C][/ROW]
[ROW][C]Null hypothesis[/C][C]0[/C][/ROW]
[ROW][C]Sample Mean[/C][C]0.108108108108108[/C][/ROW]
[ROW][C]2-sided Confidence Interval[/C][C][ -0.063776400534094 , 0.27999261675031 ][/C][/ROW]
[ROW][C]Left-sided Confidence Interval[/C][C][ -0.0349780717693694 , +inf ][/C][/ROW]
[ROW][C]Right-sided Confidence Interval[/C][C][ -inf,  0.251194287985586 ][/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=89387&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=89387&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 size37
Sample standard deviation0.515524747966347
Confidence0.95
Null hypothesis0
Sample Mean0.108108108108108
2-sided Confidence Interval[ -0.063776400534094 , 0.27999261675031 ]
Left-sided Confidence Interval[ -0.0349780717693694 , +inf ]
Right-sided Confidence Interval[ -inf, 0.251194287985586 ]


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 0.95 ; par2 = 0 ;
Parameters (R input):
par1 = 0.95 ; par2 = 0 ;
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')