What will be the circumference of an Orange tree after 800 days of being planted?
In a linear regression problem, we use the formula for a straight line:
Y=m*x+b
Where Y is the question to solve
In R we use the lm() funcion to find the best adjustments for that formula given some basic info
lm(circumference ~ age, data = Orange)
According to lm, the best parameters are: Intercept = 17.3997, age = 0.1068
circumference <- 0.1068 * age + 17.3997
The result is 102.8397 mm for the value of the circumference of an Orange tree after 800 days of it being planted.