Question

2. The weight (in kg) of students are given below:

Weight (kg)। No. of students
30< W <35. 10
35 < W<40. 11
40 < W< 45. 15
45 < W<50. 7
50 < W<55. 4

Find the median weight of a student.​

Answer 1

40.83 kg is median weight of students

Step-by-step explanation:

Class             f               cf

30 - 35          10            10

35 - 40          11             21

40 - 45          15            36

45 - 50          7             43

50 - 55          4             47

47 Students so 24th students

lies in 40-45 kg Class

Median  = 40   + 5 ( 47/2  - 21)/15

= 40 +  (5/2)/3

= 40 + 5/6

= 40 + 0.83

= 40.83

40.83 kg is median weight of students

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