I have a dataset with 15 people. For each person I have the age and a blood measurement. The relation between the age and the blood measurement is linear.
The plot between the two variables looks like this:
I would like to make a model in which I can predict the blood measurement given that I know the age. If I have a different dataset and I know the age of those people I can therefore predict their blood measurement.
Can anyone help with that?
Can I use the equation y=ax+b? Would that work for a different population?