R/mybin.R

In anishkapeter/MATH4753FALLANISHKA: MATH 4753 functions

#' Title MyBin
#'
#' @param iter iterations
#' @param n sample size
#' @param p probablitity
#'
#' @importFrom grDevices rainbow
#' @importFrom graphics barplot
#' @return a relative frequency bar plot
#' @export
#'
#' @examples
#' mybin(iter=1, n=5, p=0.3)
mybin=function(iter=100,n=10, p=0.5){
  sam.mat=matrix(NA,nrow=n,ncol=iter, byrow=TRUE)
  succ=c()
  for( i in 1:iter){
    sam.mat[,i]=sample(c(1,0),n,replace=TRUE, prob=c(p,1-p))
    succ[i]=sum(sam.mat[,i])
  }
  succ.tab=table(factor(succ,levels=0:n))
  barplot(succ.tab/(iter), col=rainbow(n+1), main="Binomial simulation", xlab="Number of successes")
  succ.tab/iter
}