A school organised a Health Check Up Camp for its students. The weights (in kg) of the students of a class were recorded as below:
41 40 36 52 50 48 47 45 40 41 42 49 50 51 38 41 40 45 40 39 49 51 48 46 44 50 57 38 41 51

Based on the above information, answer the following questions :
Q.1. The range of the data is:
(a) 20 kg (b) 21 kg (c) 22 kg (d) 23 kg
Q.2. Mean weight of the data is :
(a) 45 kg (b) 44.5 kg (c) 42.5 kg (d) 40.5 kg
Q.3. Median of the data is :
(a) 44 kg (b) 45 kg (c) 45.5 kg (d) 46 kg
Q.4. One student weighing 45 kg , was absent on that day. Next day, the teacher added his name in the list. The average weight of the new group is :
(a) 47 kg (b) 46.4 kg (c) 46 kg (d) 45 kg
Q.5. The median weight of the students after adding the absentee in the list is :
(a) 45 kg (b) 46 kg (c) 44.5 kg (d) 44.2 kg