[R] sampling from normal

Hello If i want to resample from the lower tail of normal distribution , are these commands equivelant??  lower tail :qnorm(runif(n,0,pnorm(a))) if a is a lower tail bound or  lower tail:qnorm(p*runif(n)) if p is the probability of each interval(the observations are divided to intervals)  

[R] resample from tail of exponential

Hello If i want to resample from the tail of exponential distribution,and the observations are divided to intervals ,the probability of each interval is p.what is the suitable command? Regards   Sulafah [[alternative HTML version deleted]]

[R] question

Hello   I want to know how can i sampling from upper and lower tail of normal distribution , in two cases , if i know the upper and lower bounds of distribution and if i do not.   Regards [[alternative HTML version deleted]] __

[R] sampling from normal distribution

Hello If i want to resampl from the tails of normal distribution , are these commans equivelant??   upper tail:qnorm(runif(n,pnorm(b),1))  if b is an upper tail boundary   or   upper tail:qnorm((1-p)+p(runif(n))  if p is the probability of each interval (the observatins are divided to intervals)

[R] compare histograms

Hello How to compare  two statistical histograms? How i can know if these histograms are equivalent or not??   Regards [[alternative HTML version deleted]] __ R-help@r-project.org mailing list

[R] out put of loop in list

Hello I have a loop to draw few samples and I want to but this samples in one list, how I can make this? when I use it , the list show just the last sample. I want to know the correct way to put all samples in one list.   Regards Sulafah [[alternative HTML version deleted]]

[R] approximation of test

Hello I want to use this function in R (wilcox.test) , is this function can approximate the statistic automatically  if the sample size is large or not??   Regards Sulafah [[alternative HTML version deleted]] __ R-help@r-project.org mailing

[R] loop in list

Hello I have a loop to sample 20 samples and I want to put them in one list, how I can make this??   Regards Sulafah [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE

[R] sample

Hello If I have x=c(3,2,6,1) and n=length(x), are the following codes equivalent?? sample(x,1,replace=TRUE)    and   sample(x,1,replace=TRUE,prob=rep(1/n , n) ) Regards [[alternative HTML version deleted]] __ R-help@r-project.org mailing

[R] sample with equal probabilities

Hello If I have this vector x=c(5,1,2,9) and n=length(x) and I want to sample one value from x , and each value of x has equal probability to appear (1/n). Are the following codes equivalent?? sample(x,1,replace=TRUE)  and   sample(x,1,replace=TRUE,prob=rep(1/n , n))   Regards

[R] SIGN.test

Hello I used SIGN.test function in R 2.12.2 to apply one sample sign test and it is worked well ,but I want to put statistic in a variable and I could not get this value, I used : x=rnorm(100) t=SIGN.test(x,md=0,alt=less) t$rval[1]$statistic   the last command work in the old version of R but