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R Software Module

rwasp_hypothesisvariance1.wasp

Title produced by software

Testing Variance - Critical Value (Region)

Date of computation

Mon, 25 Oct 2010 21:54:08 +0000

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/2010/Oct/25/t1288043712p6glqy4pcpgw0ny.htm/, Retrieved Mon, 29 Apr 2024 17:54:56 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=88627, Retrieved Mon, 29 Apr 2024 17:54:56 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

219

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]
F   PD    [Testing Mean with unknown Variance - Critical Value] [Workshop 4, quest...] [2010-10-25 21:08:20] [3635fb7041b1998c5a1332cf9de22bce]
- RMPD        [Testing Variance - Critical Value (Region)] [Workshop 4, quest...] [2010-10-25 21:54:08] [23a9b79f355c69a75648521a893cf584] [Current]
- R P           [Testing Variance - Critical Value (Region)] [workshop 4 vraag 8] [2011-10-22 17:39:15] [aa7c7608f809e956d7797134ec926e04] 
- R P           [Testing Variance - Critical Value (Region)] [] [2011-10-24 18:50:59] [46896e8a404bb9354f2d070359621409] 
- RMP           [Testing Variance - Critical Value (Region)] [] [2011-10-24 19:53:02] [74be16979710d4c4e7c6647856088456] 
- R P           [Testing Variance - Critical Value (Region)] [] [2011-10-25 11:10:35] [74be16979710d4c4e7c6647856088456] 
-   P           [Testing Variance - Critical Value (Region)] [WS 4 - Task 8] [2011-10-25 13:51:24] [43239ed98a62e091c70785d80176537f] 
-   P           [Testing Variance - Critical Value (Region)] [] [2011-10-25 14:22:46] [97a82ed57455ec27012f2e899dc4f1a4] 
-   P           [Testing Variance - Critical Value (Region)] [] [2011-10-25 14:23:54] [97a82ed57455ec27012f2e899dc4f1a4] 
- RMP           [Testing Mean with known Variance - Sample Size] [] [2011-10-25 14:34:30] [97a82ed57455ec27012f2e899dc4f1a4] 
- R               [Testing Mean with known Variance - Sample Size] [] [2011-10-25 14:39:52] [97a82ed57455ec27012f2e899dc4f1a4] 
- RM              [Minimum Sample Size - Testing Mean] [] [2011-10-25 14:43:09] [97a82ed57455ec27012f2e899dc4f1a4] 
- R P           [Testing Variance - Critical Value (Region)] [] [2011-10-25 18:37:30] [147523945ddfd9cf10d509b57b5cab55] 
- RMP           [Testing Mean with known Variance - Sample Size] [Sample size] [2011-10-25 18:50:11] [147523945ddfd9cf10d509b57b5cab55] 
- R               [Testing Mean with known Variance - Sample Size] [Sample size] [2011-10-25 18:53:25] [147523945ddfd9cf10d509b57b5cab55] 
- RM              [Minimum Sample Size - Testing Mean] [Sample size] [2011-10-25 19:00:24] [147523945ddfd9cf10d509b57b5cab55] 
- R P           [Testing Variance - Critical Value (Region)] [] [2012-10-23 09:41:15] [26ad7b3e1a1c0dbfc150b12ad04e69c7] 

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Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	2 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 & 2 seconds \tabularnewline
R Server & 'Sir Ronald Aylmer Fisher' @ 193.190.124.24 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=88627&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]2 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=88627&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=88627&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	2 seconds
R Server	'Sir Ronald Aylmer Fisher' @ 193.190.124.24

Testing Variance - Critical value (region)
Sample size	63
Sample variance	13
Null hypothesis (H0)	20
Type I error (alpha)	0.35
Critical value	18.4416628480944
Conclusion	Reject the null hypothesis

\begin{tabular}{lllllllll}
\hline
Testing Variance - Critical value (region) \tabularnewline
Sample size & 63 \tabularnewline
Sample variance & 13 \tabularnewline
Null hypothesis (H0) & 20 \tabularnewline
Type I error (alpha) & 0.35 \tabularnewline
Critical value & 18.4416628480944 \tabularnewline
Conclusion & Reject the null hypothesis \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=88627&T=1

[TABLE]
[ROW][C]Testing Variance - Critical value (region)[/C][/ROW]
[ROW][C]Sample size[/C][C]63[/C][/ROW]
[ROW][C]Sample variance[/C][C]13[/C][/ROW]
[ROW][C]Null hypothesis (H0)[/C][C]20[/C][/ROW]
[ROW][C]Type I error (alpha)[/C][C]0.35[/C][/ROW]
[ROW][C]Critical value[/C][C]18.4416628480944[/C][/ROW]
[ROW][C]Conclusion[/C][C]Reject the null hypothesis[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=88627&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=88627&T=1

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Testing Variance - Critical value (region)
Sample size	63
Sample variance	13
Null hypothesis (H0)	20
Type I error (alpha)	0.35
Critical value	18.4416628480944
Conclusion	Reject the null hypothesis

Parameters (Session):

par1 = 98 ; par2 = 13 ; par3 = 20 ; par4 = 0.15 ;

Parameters (R input):

par1 = 63 ; par2 = 13 ; par3 = 20 ; par4 = 0.35 ;

R code (references can be found in the software module):

par1<-as.numeric(par1)
par2<-as.numeric(par2)
par3<-as.numeric(par3)
par4<-as.numeric(par4)
df <- par1 - 1
if (par2 > par3)
{
myc <- par3 / df * qchisq(1-par4,df)
} else {
myc <- par3 / df * qchisq(par4,df)
}
myc
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,hyperlink('ht_variance.htm','Testing Variance - Critical value (region)','learn more about Statistical Hypothesis Testing about the Variance'),2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Sample size',header=TRUE)
a<-table.element(a,par1)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Sample variance',header=TRUE)
a<-table.element(a,par2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Null hypothesis (H0)',header=TRUE)
a<-table.element(a,par3)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Type I error (alpha)',header=TRUE)
a<-table.element(a,par4)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Critical value',header=TRUE)
a<-table.element(a,myc)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Conclusion',header=TRUE)
if (par2 > par3)
{
if (par2 < myc) a<-table.element(a,'There is no reason to reject the null hypothesis') else a<-table.element(a,'Reject the null hypothesis')
} else {
if (par2 > myc) a<-table.element(a,'There is no reason to reject the null hypothesis') else a<-table.element(a,'Reject the null hypothesis')
}
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')

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