R语言与统计分析第四章答案4页.docx

#第四章习题#4.1x-rbinom(1000,100,0.3)hist(x,main=c(1000个参数为0.3的伯努利分布随机数)#4.2x-rnorm(1000,10,4)hist(x,probability=T,xlim=c(min(x),max(x),nclass=max(x)-min(x)+1, col=lightblue,main=c(1000个正态分布随机数)lines(density(x,bw=1),col=blue,lwd=3) #4.3x-sample(c(rt(10,1),rt(10,2),rt(10,10),1000,replace=T)hist(x,xlim=c(min(x),max(x),probability=T, nclass=max(x)-min(x)+1,col=lightblue, main=c(3个t分布混合样本直方图)lines(den