R语言数据分析、展现与实例 (第一周)

课后习题：

 

x1 = c(13,15,16,16,19,20,20,21,22,22,25,25,25,25,30,33,33,35,35,35,35,36,40,45,46,52,70);
print(round(mean(x1)));  #平均值
print(median(x1,na.rm=TRUE));  #中值