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Question 7:

The distribution below gives the weights of 30 students of a class. Find the median weight of the students.

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

Answer:

The cumulative frequencies with their respective class intervals are as follows.

Weight (in kg)

Frequency (fi)

Cumulative frequency

40 − 45

2

2

45 − 50

3

2 + 3 = 5

50 − 55

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