Hey,
The eligibility to study Bachelor of Science in Statistics is that you should pass 12th from any recognized board with Mathematics as one of the main subjects from Science stream with minimum 50 percent. While some universities conduct entrance Test,the others take admission on the basis of 12th marks.
Some of the colleges offering B.Sc in Statistics in Mumbai are:
1. Kishinchand Chellaram College of Arts,Commerce and Science
2.Ramniranjan Jhunjhunwala College
3.Bhavan's College
4.Maharshi Dayananda College of Arts,Science and Commerce
5. GN Khalsa College of Arts,Sciences and Commerce
Hope this helps.
Good luck.

Dear Pevin,
For B.Sc. in Statistics you need to pass your 10+2 from any recognised university with Science background. Here are the top college in Mumbai for B.Sc. Statistics.
1. St. Xavier's College
2. Elphinstone College
3. Ramniranjan Jhunjhunwala College
4. SIES College of Arts Science and Commerce
You can choose any one as per your convenience.