vector

cara membuat data dalam bentuk vector.

#create simple data
X <- c(15,17,19,20,22,37,25,50)
Y <- c(150,200,235,320,300,400)
#print simple
X
## [1] 15 17 19 20 22 37 25 50
Y
## [1] 150 200 235 320 300 400

#simple linear regresion

Y = a + bx

Y = 170 + 17X

scatter plot

plot(Y - X, ylab="Y" , pch=20 )
## Warning in Y - X: longer object length is not a multiple of shorter object
## length
#systematic relationship to the plot

abline ( a=310, b=-40)