Question

The distribution below gives the weights of 100 students of a class.

Weight (in kg) Number of Students 25

20-30. 25

30-40. 15

40-50 10

60-70. 6

70-80. 24

80-90. 8


Based on above data, answer the following questions :

Find its median


Please Answer In Detail And Please I Request You To Give Answer Quickly ​

Answer 1

Answer:

Median = 1 + xh

n = Ef = 30

72 2 30 2 = 15

:: 55-60 is the median class

1 = lower limit of median class = 55

h = class-interval = 45-40 = 5

cf = cumulative frequency of the class before median class = 13

f = frequency of the median class = 6

Weight (in kg)

40 - 45

45 - 50

50 55

55 - 60

60 - 65

65 - 70

70-75

Number of

students ()

2

3

8

6

6

3

2

Σf= 30

Cumulative

frequency

2

2 + 3 = 5

5 + 8 = 13

13 + 6 = 19

19 + 6 = 25

25 + 3 = 28

28 + 2 = 30