I am currently finishing my MS in Economics and Finances and I intend to apply for a PhD in statistics. There are many reasons why I did not make an undergrad and grad in statistics but in economics, first of all the fact that in my previous university there was no statistics department.
I'm searching for some advice regarding my statement of purpose since my previous experience is not necessary connected with Statistics. Should I make more emphasis on my quantitative background, on my motivation, on the reasons why I want to apply for this particular program, even though my background might not be entirely relevant?
Is there some advice you can give a student making this sort of "field-shift"?