If you are talking about DU MA Statistics, then the eligibility is:

Any candidate who has obtained bachelor’s degree in any subject and has studied at least 3 courses each of one year duration or 6 courses each of one semester duration in Statistics under 10+2+3 scheme of examination securing at least 50% marks in aggregate will be eligible to appear in entrance examination.

SO you are eligible for MA Statistics provided you have atleast 50% in B.Com (//B.Com) (Hons.)

** In general for most of the universities this is the criteria.

I hope my answer helps. All the very best for your future endeavors!

(//B.Com)