hey Ebin,

Mstat is a A two-year program in  Master of Statistics (M.Stat).

Admission procedure

The details of admission are available in the prospectus. Students having the B.Stat. degree of ISI, B.A./B.Sc. (Statistics), B.Math. degree of ISI, or B.A./B.Sc. (Mathematics) with Statistics as a full subject are eligible for the M.Stat. selection test. Students with B.Stat. (Hons.) degree of ISI are eligible for direct admission to the M.Stat. programme.

do check the official site for more details

https://www.isibang.ac.in/~statmath/courses/mstatbro.htm#Admission

This link will surely solve all your doubts.

i hope thiis was helpful .

good luck