Question

The distribution below gives the weights of 30 students of a class. Find the median
weight of
the students.
су
18
Weight (in kg)
40-45 45-50
45-50 50-55 55-60 60-65 65-70 70-75
Number of students
2
3
8
6
6
3
2​

Answer 1

Answer:

Weight ( in kg ) Frequency Cumulative frequency

40−45 2 2

45−50 3 5

50−55 8 13

55−60 6 19

60−65 6 25

65−70 3 28

70−75 2 30

N=30

We have N=30 and

2

N

=15.

Median class =55−60, so l=55,f=6,cf=13 and h=60−55=5

Median=l+

f

2

N

−cf

×h

⇒ Median=55+

6

15−13

×5

⇒ Median=55+1.67=56.67kg

hope it's correct and help full

Answer 2

Answer:

Above is ur ans.......