Home » date » 2009 » Dec » 07 »

part 2 lang n com

*The author of this computation has been verified*

R Software Module: Ian.Holliday/rwasp_Tests to Compare Two Means.wasp (opens new window with default values)

Title produced by software: Aston University Statistical Software

Date of computation: Mon, 07 Dec 2009 07:18:00 -0700

Cite this page as follows:

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL http://www.freestatistics.org/blog/date/2009/Dec/07/t1260195534bcgr93qfjhi2afh.htm/, Retrieved Thu, 23 May 2013 18:58:19 +0000

Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords:

System-generated keywords (parent):

t1260195108o7ezd0rk63rn7qh (pk = 64579)

Estimated Impact

Dataseries X:

» Textfile « » CSV « » Correlation Matrix « » Notched Boxplots «

Output produced by software:

Enter (or paste) a matrix (table) containing all data (time) series. Every column represents a different variable and must be delimited by a space or Tab. Every row represents a period in time (or category) and must be delimited by hard returns. The easiest way to enter data is to copy and paste a block of spreadsheet cells. Please, do not use commas or spaces to seperate groups of digits!

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 seconds
R Server	'Gwilym Jenkins' @ 72.249.127.135
R Framework error message	Warning: there are blank lines in the 'Data X' field. Please, use NA for missing data - blank lines are simply deleted and are NOT treated as missing values.

Students T-Test
	Statistic	P-value
Students T-Test	9.80827	0

Charts produced by software:

http://www.freestatistics.org/blog/date/2009/Dec/07/t1260195534bcgr93qfjhi2afh/1h6pz1260195478.png (opens in new window)

http://www.freestatistics.org/blog/date/2009/Dec/07/t1260195534bcgr93qfjhi2afh/1h6pz1260195478.ps (opens in new window)

Click here to open pdf file.

Parameters (Session):

par1 = two.sided ; par2 = 1 ; par3 = 2 ; par4 = Students T-Test ; par5 = paired ; par6 = 0.0 ; par8 = FALSE ;

Parameters (R input):

par1 = two.sided ; par2 = 1 ; par3 = 2 ; par4 = Students T-Test ; par5 = paired ; par6 = 0.0 ; par8 = FALSE ;

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

par2 <- as.numeric(par2)
par3 <- as.numeric(par3)
par4 <- as.character(par4)
par5 <- as.character(par5)
par6 <- as.numeric(par6)
if ( par5 == 'unpaired') paired <- FALSE else paired <- TRUE
x <- t(y)
bitmap(file='test1.png')
(r<-boxplot(x ,xlab=xlab,ylab=ylab,main=main,notch=FALSE,col=2))
dev.off()
load(file='createtable')
if( par4 == 'Wilcoxon-Mann_Whitney'){
a<-table.start()
a <- table.row.start(a)
a <- table.element(a,'Wilcoxon Test',3,TRUE)
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'',1,TRUE)
a <- table.element(a,'Statistic',1,TRUE)
a <- table.element(a,'P-value',1,TRUE)
a <- table.row.end(a)
W <- wilcox.test(x[,par2],x[,par3],alternative=par1, paired = paired)
a<-table.row.start(a)
a<-table.element(a,'Wilcoxon Test',1,TRUE)
a<-table.element(a,W$statistic[[1]])
a<-table.element(a,round(W$p.value, digits=5) )
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')
}
if( par4 == 'Students T-Test')
{
a<-table.start()
a <- table.row.start(a)
a <- table.element(a,'Students T-Test',3,TRUE)
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'',1,TRUE)
a <- table.element(a,'Statistic',1,TRUE)
a <- table.element(a,'P-value',1,TRUE)
a <- table.row.end(a)
T <- t.test(x[,par2],x[,par3],alternative=par1, paired=paired, mu=par6)
a<-table.row.start(a)
a<-table.element(a,'Students T-Test',1,TRUE)
a<-table.element(a,round(T$statistic[[1]], digits=5) )
a<-table.element(a,round(T$p.value, digits=5) )
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')
}