Use graph paper to answer this question. During a medical checkup of 60 students in a school, weights were recorded as follows :Taking $2 \mathrm{cm}=2 \mathrm{kg}$ along one axis and $2 \mathrm{cm}$ $=10$ students along the other axis draw an ogive. Use your graph to find the :(a) median (b) upperQuartile (c) number of students whose weight is above $37 \mathrm{kg}$