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Description of Statistical Computation

Author's title

Author*Unverified author*
R Software Modulerwasp_hypothesisvariance3.wasp
Title produced by softwareTesting Variance - Confidence Intervals for Sample Variance
Date of computationTue, 23 Oct 2012 06:18:27 -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/2012/Oct/23/t135098751254hliyar4sxf90h.htm/, Retrieved Thu, 02 May 2024 00:22:56 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=182814, Retrieved Thu, 02 May 2024 00:22:56 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact150

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Testing Mean with unknown Variance - Critical Value] [] [2011-10-24 16:38:49] [227e53f633d125e3e89f625705633e7f]
- RMPD  [One Sample Tests about the Mean] [] [2011-10-24 17:13:46] [227e53f633d125e3e89f625705633e7f]
- RM D    [Testing Mean with unknown Variance - Critical Value] [] [2011-10-24 17:41:49] [227e53f633d125e3e89f625705633e7f]
- RM D      [Testing Variance - Confidence Intervals for Sample Variance] [] [2011-10-24 17:51:05] [227e53f633d125e3e89f625705633e7f]
- R P           [Testing Variance - Confidence Intervals for Sample Variance] [] [2012-10-23 10:18:27] [d41d8cd98f00b204e9800998ecf8427e] [Current]
- RMPD            [Paired and Unpaired Two Samples Tests about the Mean] [WS5-Q1] [2012-10-25 14:20:21] [f4f48270c576c45d216b84daa061a85b]
- R  D              [Paired and Unpaired Two Samples Tests about the Mean] [WS5-Q2] [2012-10-25 14:54:33] [f4f48270c576c45d216b84daa061a85b]
- RMPD              [One-Way-Between-Groups ANOVA- Free Statistics Software (Calculator)] [WS5-Q6] [2012-10-25 18:02:08] [f4f48270c576c45d216b84daa061a85b]
- RMPD              [One-Way-Between-Groups ANOVA- Free Statistics Software (Calculator)] [WS5-Q6-2] [2012-10-25 18:45:41] [f4f48270c576c45d216b84daa061a85b]
- RMPD              [One-Way-Between-Groups ANOVA- Free Statistics Software (Calculator)] [WS5-Q7-1] [2012-10-25 19:18:23] [f4f48270c576c45d216b84daa061a85b]
- R                   [One-Way-Between-Groups ANOVA- Free Statistics Software (Calculator)] [WS5-Q7-2] [2012-10-25 19:39:06] [f4f48270c576c45d216b84daa061a85b]
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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'Herman Ole Andreas Wold' @ wold.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 & 'Herman Ole Andreas Wold' @ wold.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=182814&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]'Herman Ole Andreas Wold' @ wold.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=182814&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=182814&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'Herman Ole Andreas Wold' @ wold.wessa.net






Testing Variance - Confidence Intervals for Sample Variance
Sample size98
Null hypothesis (H0)0.13
Confidence interval0.65
Type of IntervalLeft tailRight tail
Two-sided confidence interval at 0.650.1125028165382660.147272100857417
Left one-sided confidence interval at 0.650.122075721033507+inf
Right one-sided confidence interval at 0.6500.13640469530074
more information about confidence interval

\begin{tabular}{lllllllll}
\hline
Testing Variance - Confidence Intervals for Sample Variance \tabularnewline
Sample size & 98 \tabularnewline
Null hypothesis (H0) & 0.13 \tabularnewline
Confidence interval & 0.65 \tabularnewline
Type of Interval & Left tail & Right tail \tabularnewline
Two-sided confidence interval at  0.65 & 0.112502816538266 & 0.147272100857417 \tabularnewline
Left one-sided confidence interval at  0.65 & 0.122075721033507 & +inf \tabularnewline
Right one-sided confidence interval at  0.65 & 0 & 0.13640469530074 \tabularnewline
more information about confidence interval \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=182814&T=1

[TABLE]
[ROW][C]Testing Variance - Confidence Intervals for Sample Variance[/C][/ROW]
[ROW][C]Sample size[/C][C]98[/C][/ROW]
[ROW][C]Null hypothesis (H0)[/C][C]0.13[/C][/ROW]
[ROW][C]Confidence interval[/C][C]0.65[/C][/ROW]
[ROW][C]Type of Interval[/C][C]Left tail[/C][C]Right tail[/C][/ROW]
[ROW][C]Two-sided confidence interval at  0.65[/C][C]0.112502816538266[/C][C]0.147272100857417[/C][/ROW]
[ROW][C]Left one-sided confidence interval at  0.65[/C][C]0.122075721033507[/C][C]+inf[/C][/ROW]
[ROW][C]Right one-sided confidence interval at  0.65[/C][C]0[/C][C]0.13640469530074[/C][/ROW]
[ROW][C]more information about confidence interval[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=182814&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=182814&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 - Confidence Intervals for Sample Variance
Sample size98
Null hypothesis (H0)0.13
Confidence interval0.65
Type of IntervalLeft tailRight tail
Two-sided confidence interval at 0.650.1125028165382660.147272100857417
Left one-sided confidence interval at 0.650.122075721033507+inf
Right one-sided confidence interval at 0.6500.13640469530074
more information about confidence interval


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 0.95 ; par2 = 20 ;
Parameters (R input):
par1 = 98 ; par2 = 0.13 ; par3 = 0.65 ;
R code (references can be found in the software module):
par1<-as.numeric(par1)
par2<-as.numeric(par2)
par3<-as.numeric(par3)
df <- par1 - 1
halfalpha <- (1 - par3) / 2
ua <- qchisq(halfalpha,df) * par2 / df
ub <- qchisq(1-halfalpha,df) * par2 / df
ua
ub
ul <- qchisq(1-par3,df) * par2 / df
ul
ur <- qchisq(par3,df) * par2 / df
ur
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,hyperlink('ht_variance.htm','Testing Variance - Confidence Intervals for Sample Variance','learn more about Statistical Hypothesis Testing about the Variance'),3,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Sample size',header=TRUE)
a<-table.element(a,par1,2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Null hypothesis (H0)',header=TRUE)
a<-table.element(a,par2,2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Confidence interval',header=TRUE)
a<-table.element(a,par3,2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Type of Interval',header=TRUE)
a<-table.element(a,'Left tail',header=TRUE)
a<-table.element(a,'Right tail',header=TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,paste('Two-sided confidence interval at ',par3), header=TRUE)
a<-table.element(a,ua)
a<-table.element(a,ub)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,paste('Left one-sided confidence interval at ',par3), header=TRUE)
a<-table.element(a,ul)
a<-table.element(a,'+inf')
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,paste('Right one-sided confidence interval at ',par3), header=TRUE)
a<-table.element(a,'0')
a<-table.element(a,ur)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, hyperlink('ht_variance.htm#ex3', 'more information about confidence interval','example'),3,TRUE)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')