Displaying 2 results from an estimated 2 matches for "t_equal".
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2016 Apr 06
0
R-dvel [robustness Simulation study of 2 sample test on several combination of factors ]
...ed below
nsds<-length(sds)
set.seed(8)
#number of simulations
nSims<-10000
#set significance level,alpha for the whole simulatio
alpha<-0.05
#set empty vector of length no.of _calculations_ to store p-values
# Note: you have 54 calculations, not 10000
ncalcs<-dim(sample_sizes)[2]*nsds
t_equal <-c(rep(0,length=ncalcs))
t_unequal <-c(rep(0,length=ncalcs))
mann <-c(rep(0,length=ncalcs))
#set up matrix for storing data from the vectors
# but you do want 10000 replications of each calculation
matrix_Equal<-matrix(rep(NA,ncalcs*nSims),nrow=nSims)
matrix_Unequal<-matrix(rep(NA,...
2016 Apr 06
0
R-dvel [robustness Simulation study of 2 sample test on several combination of factors ]
...s.vector:
testmat3<-matrix(0,nrow=5,ncol=5)
for(i in 1:5) {
for(j in 1:5) {
testmat3[i,j]<-i+j
}
}
as.vector(testmat3)
Jim
On Wed, Apr 6, 2016 at 8:04 PM, tan sj <sj_style_1125 at outlook.com> wrote:
> Hi, i am sorry to interrupt, can I ask about this few problems?
>
> t_equal[(ss-1)*nsds+i]<-t.test(x_norm1,y_norm2,var.equal=TRUE)$p.value
> 1. From above, what do "[(ss-1)*nsds+i]" brings to the code?
>
> 2. what is the purpose of having i (the iterative) here ? I see that dr. have set the sim as the iterative then why need to set i <-1 and set it...