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)
Krishan k jakhad
D. at first glance it seems B is correct but the real answer should be D..can not determine both from given data. a real data graph should be one as attached in image might help you find the difference between the two.