Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Jeevesh magnani
overall book: HK Dass and Mary L Boas. extra: Always attempt all the past year questions without looking at solutions.