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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, 26 Oct 2010 19:33:17 +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/t1288121548ydevsuj591yds1g.htm/, Retrieved Sat, 27 Apr 2024 20:29:59 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=89581, Retrieved Sat, 27 Apr 2024 20:29:59 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact124

Tree of Dependent Computations

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 RMPD      [Testing Variance - Critical Value (Region)] [] [2010-10-26 19:33:17] [7b390cc0228d34e5578246b07143e3df] [Current]
Feedback Forum
2010-10-30 11:23:57 [7d66e2e510b144c68ca0882fd178e17c] [reply] 
Je was de opdracht al juist begonnen door de juiste calculator te kiezen maar je hebt de verkeerde gegevens ingegeven. Je hebt de verkeerde nulhypothese en type 1 fout ingevuld. De nulhypothese moest 13 zijn en de type 1 fout 0,35.

http://www.freestatistics.org/blog/index.php?v=date/2010/Oct/29/t1288352046lhrp40c1xkyq3sf.htm/

De steekproef variantie is 14 en de kritieke waarde is 13,775.
We zien dan ook dat de steekproef variantie (14) significant groter is dan de nulhypothese (13). De volgende stap die we zouden moeten doen is een links-eenzijdige test berekenen omdat 14 groter is dan 13. Maar we gaan kijken naar de tweezijdige test op basis van de populatie variantie en op basis van de steekproef variantie:
http://www.freestatistics.org/blog/index.php?v=date/2010/Oct/29/t1288352091bmzukbkyucjsl10.htm/
http://www.freestatistics.org/blog/index.php?v=date/2010/Oct/29/t128835214006wh1bwptwncjwc.htm/

Omdat 13 in de intervals valt zouden we zeggen dat de variantie niet significant verschillend is van 13 maar omdat de steekproef variantie (14) groter is dan 13 zeggen we dat de variantie van de vrouwen significant groter is dan 13. We verwerpen hier de nulhypothese.

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Dataset

Tables (Output of Computation)





\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
R Engine error message & 
Error in if (par2 > myc) a <- table.element(a, "There is no reason to reject the null hypothesis") else a <- table.element(a,  : 
  missing value where TRUE/FALSE needed
Execution halted

 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=89581&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]
[ROW][C]R Engine error message[/C][C]
Error in if (par2 > myc) a <- table.element(a, "There is no reason to reject the null hypothesis") else a <- table.element(a,  : 
  missing value where TRUE/FALSE needed
Execution halted

[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=89581&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=89581&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
R Engine error message
Error in if (par2 > myc) a <- table.element(a, "There is no reason to reject the null hypothesis") else a <- table.element(a,  : 
  missing value where TRUE/FALSE needed
Execution halted


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 0.97 ; par2 = 20 ;
Parameters (R input):
par1 = 63 ; par2 = 13 ; par3 = 20 ; par4 = 0,65 ;
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')