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_hypothesisvariance4.wasp
Title produced by softwareTesting Variance - Confidence Intervals for Population Variance
Date of computationWed, 19 Dec 2018 10:50:23 +0100
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2018/Dec/19/t1545213032s2w4u4c0442meg2.htm/, Retrieved Mon, 29 Apr 2024 19:39:05 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=316004, Retrieved Mon, 29 Apr 2024 19:39:05 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywordskl
Estimated Impact59

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Testing Variance - Confidence Intervals for Population Variance] [p] [2018-12-19 09:50:23] [fa09674f12a3014968cdbbc3a3d56352] [Current]
Feedback Forum

Post a new message

Dataset

Tables (Output of Computation)





Summary of computational transaction
Raw Input view raw input (R code)
Raw Outputview raw output of R engine
Computing time0 seconds
R ServerBig Analytics Cloud Computing Center

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input view raw input (R code)  \tabularnewline
Raw Outputview raw output of R engine  \tabularnewline
Computing time0 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=316004&T=0

[TABLE]
[ROW]
Summary of computational transaction[/C][/ROW] [ROW]Raw Input[/C] view raw input (R code) [/C][/ROW] [ROW]Raw Output[/C]view raw output of R engine [/C][/ROW] [ROW]Computing time[/C]0 seconds[/C][/ROW] [ROW]R Server[/C]Big Analytics Cloud Computing Center[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=316004&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=316004&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 Input view raw input (R code)
Raw Outputview raw output of R engine
Computing time0 seconds
R ServerBig Analytics Cloud Computing Center






Testing Variance - Confidence Intervals for Population Variance
Sample size8
Sample variance0.64
Confidence interval0.9
Type of IntervalLeft tailRight tail
Two-sided confidence interval at 0.90.3184726857696332.06704048145643
Left one-sided confidence interval at 0.90.372804056462183+inf
Right one-sided confidence interval at 0.901.5813028346472

\begin{tabular}{lllllllll}
\hline
Testing Variance - Confidence Intervals for Population Variance \tabularnewline
Sample size & 8 \tabularnewline
Sample variance & 0.64 \tabularnewline
Confidence interval & 0.9 \tabularnewline
Type of Interval & Left tail & Right tail \tabularnewline
Two-sided confidence interval at  0.9 & 0.318472685769633 & 2.06704048145643 \tabularnewline
Left one-sided confidence interval at  0.9 & 0.372804056462183 & +inf \tabularnewline
Right one-sided confidence interval at  0.9 & 0 & 1.5813028346472 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=316004&T=1

[TABLE]
[ROW][C]Testing Variance - Confidence Intervals for Population Variance[/C][/ROW]
[ROW][C]Sample size[/C][C]8[/C][/ROW]
[ROW][C]Sample variance[/C][C]0.64[/C][/ROW]
[ROW][C]Confidence interval[/C][C]0.9[/C][/ROW]
[ROW][C]Type of Interval[/C][C]Left tail[/C][C]Right tail[/C][/ROW]
[ROW][C]Two-sided confidence interval at  0.9[/C][C]0.318472685769633[/C][C]2.06704048145643[/C][/ROW]
[ROW][C]Left one-sided confidence interval at  0.9[/C][C]0.372804056462183[/C][C]+inf[/C][/ROW]
[ROW][C]Right one-sided confidence interval at  0.9[/C][C]0[/C][C]1.5813028346472[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=316004&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=316004&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 Population Variance
Sample size8
Sample variance0.64
Confidence interval0.9
Type of IntervalLeft tailRight tail
Two-sided confidence interval at 0.90.3184726857696332.06704048145643
Left one-sided confidence interval at 0.90.372804056462183+inf
Right one-sided confidence interval at 0.901.5813028346472


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
par1 = 8 ; par2 = 0.64 ; par3 = 0.90 ;
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
ub <- par2 * df / qchisq(halfalpha,df)
ua <- par2 * df / qchisq(1-halfalpha,df)
print(ua)
print(ub)
ur <- par2 * df / qchisq(1-par3,df)
print(ur)
ul <- par2 * df / qchisq(par3,df)
print(ul)
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Testing Variance - Confidence Intervals for Population 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,'Sample variance',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.end(a)
table.save(a,file='mytable.tab')