a = c(1,2,3)

b=c(4,5,6)

df=data.frame(a,b)

head(df)

A data.frame: 3 × 2

	a	b
	<dbl>	<dbl>
1	1	4
2	2	5
3	3	6

summary(df)

       a             b      
 Min.   :1.0   Min.   :4.0  
 1st Qu.:1.5   1st Qu.:4.5  
 Median :2.0   Median :5.0  
 Mean   :2.0   Mean   :5.0  
 3rd Qu.:2.5   3rd Qu.:5.5  
 Max.   :3.0   Max.   :6.0