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)
Harshita Best Answer
first find E(x) as I solved & after that like wise find E(x²) & using formulas which I mentioned solve variance & median.