> range(lifeexp)
[1] 47.794 83.394
> max(lifeexp)
[1] 83.394
> min(lifeexp)
[1] 47.794
> IQR(lifeexp)
[1] 11.986
> var(lifeexp)
[1] 93.48446
> sd(lifeexp)
[1] 9.668736
> sqrt(var(lifeexp))
[1] 9.668736
> round(sd(lifeexp),1)
[1] 9.7
> med=medion(lifeexp)
错误: 没有"medion"这个函数
> med=median(lifeexp)
> range=max(lifeexp)-min(lifeexp)
> std.dev=sd(lifeexp)
> trim=c(med,range,std.dev,trim)
错误: 找不到对象'trim'
> trim=c(med, range)
> trim=c(med,range,std.dev,trim)
> trim
[1] 73.235000 35.600000 9.668736 73.235000 35.600000
> renames(trim)=c('med','range','std.dev','trim')
错误于renames(trim) = c("med", "range", "std.dev", "trim") :
没有"renames<-"这个函数
> rownames(trim)=c('med','range','std.dev','trim')
错误于`rownames<-`(`*tmp*`, value = c("med", "range", "std.dev", "trim" :
不能给没有维度的对象设行名
> trime=c(med,range,std.dev,trim))
错误: 意外的')'在"trime=c(med,range,std.dev,trim))"里
> trime=c(med,range,std.dev,trim)
> ststs=cbind(trim,trime)
警告信息：
In cbind(trim, trime) :
number of rows of result is not a multiple of vector length (arg 1)
> ststs
trim trime
[1,] 73.235000 73.235000
[2,] 35.600000 35.600000
[3,] 9.668736 9.668736
[4,] 73.235000 73.235000
[5,] 35.600000 35.600000
[6,] 73.235000 9.668736
[7,] 35.600000 73.235000
[8,] 9.668736 35.600000
> rownames(ststs)=c('med','range','std.dev','trim')
错误于`rownames<-`(`*tmp*`, value = c("med", "range", "std.dev", "trim" :
'dimnames'的长度[1]必需与陈列范围相等
> trim
[1] 73.235000 35.600000 9.668736 73.235000 35.600000
> trime
[1] 73.235000 35.600000 9.668736 73.235000 35.600000 9.668736 73.235000
[8] 35.600000
> trime=trime[2:6]
> ststs=cbind(trim,trime)
> ststs
trim trime
[1,] 73.235000 35.600000
[2,] 35.600000 9.668736
[3,] 9.668736 73.235000
[4,] 73.235000 35.600000
[5,] 35.600000 9.668736
> rownames(ststs)=c('med','range','std.dev','trim')
错误于`rownames<-`(`*tmp*`, value = c("med", "range", "std.dev", "trim" :
'dimnames'的长度[1]必需与陈列范围相等
> rownames(ststs)=c('med','range','std.dev','trim','a')
> ststs
trim trime
med 73.235000 35.600000
range 35.600000 9.668736
std.dev 9.668736 73.235000
trim 73.235000 35.600000
a 35.600000 9.668736
>
