if a set a data from the years 1990 to 2015 is given with a model, and x = the number of years after 1990, what inputs would be used for the given years

Question

if a set a data from the years 1990 to 2015 is given with a model, and x = the number of years after 1990, what inputs would be used for the given years

Answer 1

The inputs will be the x values.  Since x is the number of years after 1990, your x values will be in the range of

 

0 ≤ x ≤ 25

 

where         x=0 is 1990

                  x=1 is 1991

                  x=2 is 1992

                  x=3 is 1993

                  x=10 is 2000

                  x=20 is 2010

                  x=25 is 2015