it is not a matter of fact which concentration matches your background (stats). however, it does matter where your research interests are. phd is a long run investment (at least 5 years for most people with (a) master(s).) therefore, you really can not continue to the end if you do not like the subject.
If you did your undergraduate in the States, then apply and have a try. If not, It is a good idea to come to enroll in a master degree and you will find more opportunities.