1 단순회귀 모형

1.1 데이타

food = read.table(url("http://www.principlesofeconometrics.com/poe4/data/dat/food.dat"),header=F)
head(food)         
##       V1    V2
## 1 115.22  3.69
## 2 135.98  4.39
## 3 119.34  4.75
## 4 114.96  6.03
## 5 187.05 12.47
## 6 243.92 12.98

1.2 데이타 요약

summary(food)      # Summary statistics 
##        V1              V2       
##  Min.   :109.7   Min.   : 3.69  
##  1st Qu.:200.4   1st Qu.:17.11  
##  Median :264.5   Median :20.03  
##  Mean   :283.6   Mean   :19.60  
##  3rd Qu.:363.3   3rd Qu.:24.40  
##  Max.   :587.7   Max.   :33.40

1.3 데이타 그림

plot(food)         # Plot matrix