Is there a linear relationship between the two stated factors, or does
the factor last for 12 months and then change? What is the factor
below 12 months? Will you enter 19 (months) directly, or derive it
from a start and end date?

Please give more details.

Pete

On Apr 17, 4:00 pm, walkerT wrote:
I am looking for a formula that will develop a factor based on months.

Example:

at 12 months the developmental factor is 1.724
at 24 months the developmental factors is 1.347

I need a formula that would give me the developmental factor at 19 months

Any help is much appreciated...