FreeStatistics.org

Free Statistics

of Irreproducible Research!

Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_hypothesisvariance1.wasp
Title produced by softwareTesting Variance - Critical Value (Region)
Date of computationTue, 25 Oct 2011 13:12:54 -0400
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2011/Oct/25/t1319562783fbp4o8ow3f3qqgf.htm/, Retrieved Thu, 20 Feb 2025 19:34:27 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=135903, Retrieved Thu, 20 Feb 2025 19:34:27 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact189

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Testing Variance - Critical Value (Region)] [Question 8 - Males] [2010-10-25 18:51:16] [1429a1a14191a86916b95357f6de790b]
-         [Testing Variance - Critical Value (Region)] [] [2011-10-25 17:12:54] [539ae27d3016cec7ecb6ecd6e9a1efc7] [Current]
- RM        [Testing Variance - Critical Value (Region)] [] [2011-10-25 20:25:16] [91a574755a5705cf32ceabffa6be83ea]
-   P       [Testing Variance - Critical Value (Region)] [Workshop 4: Quest...] [2012-10-22 14:26:36] [858ee473e214e1dd3250737e6beb8d32]
-   P       [Testing Variance - Critical Value (Region)] [workshop 4: Quest...] [2012-10-22 14:30:11] [858ee473e214e1dd3250737e6beb8d32]
- RMP       [Minimum Sample Size - Testing Mean] [Workshop 4: Quest...] [2012-10-22 14:36:12] [858ee473e214e1dd3250737e6beb8d32]
- R           [Minimum Sample Size - Testing Mean] [Workshop 4: Quest...] [2012-10-22 14:41:02] [858ee473e214e1dd3250737e6beb8d32]
- RM          [Testing Mean with known Variance - Sample Size] [Workshop 4: Quest...] [2012-10-22 14:48:33] [858ee473e214e1dd3250737e6beb8d32]
- R             [Testing Mean with known Variance - Sample Size] [workshop 4: Quest...] [2012-10-22 14:52:14] [858ee473e214e1dd3250737e6beb8d32]
-  MP             [Testing Mean with known Variance - Sample Size] [Question 10 - WS4] [2012-10-23 17:13:06] [b1dfdbefa55399d24de0a14859302915]
- RMP           [Testing Mean with known Variance - Sample Size] [Question 9 - WS4] [2012-10-23 17:09:49] [b1dfdbefa55399d24de0a14859302915]
Feedback Forum

Post a new message

Dataset

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' @ 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 & 1 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=135903&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' @ jenkins.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=135903&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=135903&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' @ jenkins.wessa.net






Testing Variance - Critical value (region)
Sample size98
Sample variance13
Null hypothesis (H0)20
Type I error (alpha)0.35
Critical value18.7808801590011
ConclusionReject the null hypothesis

\begin{tabular}{lllllllll}
\hline
Testing Variance - Critical value (region) \tabularnewline
Sample size & 98 \tabularnewline
Sample variance & 13 \tabularnewline
Null hypothesis (H0) & 20 \tabularnewline
Type I error (alpha) & 0.35 \tabularnewline
Critical value & 18.7808801590011 \tabularnewline
Conclusion & Reject the null hypothesis \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=135903&T=1

[TABLE]
[ROW][C]Testing Variance - Critical value (region)[/C][/ROW]
[ROW][C]Sample size[/C][C]98[/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]18.7808801590011[/C][/ROW]
[ROW][C]Conclusion[/C][C]Reject the null hypothesis[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=135903&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=135903&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:

Testing Variance - Critical value (region)
Sample size98
Sample variance13
Null hypothesis (H0)20
Type I error (alpha)0.35
Critical value18.7808801590011
ConclusionReject the null hypothesis


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 98 ; par2 = 13 ; par3 = 20 ; par4 = 0.35 ;
Parameters (R input):
par1 = 98 ; 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')