生活中的統計期中考作業寫完版

## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   4 | 9
##   5 | 139
##   6 | 13
##   7 | 9
##   8 | 49
##   9 | 1

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##   49.00   54.50   62.00   67.90   82.75   91.00

## [1] 67.9

## [1] 62

## [1] 49

## [1] 16.25115

## [1] 264.1

##  25% 
## 54.5

##   75% 
## 82.75

```