Question

4. The weights (in kg) of 11 students of Class-VII (in April 2015) is:
42, 52, 48, 52, 55, 58, 53, 54, 46, 49, 57
Find the median of these weights.
In July 2015, one student of weight 58 kg, left the school and a new student of weight
68 kg joined the class. Find the new median.​

Answer 1

Step-by-step explanation:

median is the value at middle term for odd no of terms or

average of values at middle terms for even no. of terms

42 46 48 49 52 52 53 54 55 57 58

no. of terms = 11

middle term = 11+1/2 =6th term

median = value at 6th term = 52

when 58 wt. left and 68wt. joined,

the median is still 52