Question

Item 5 10 20 30 40 50 60 70

Frequency(f) 2 5 1 3 12 3 5 7

Find the Median of the above data.

Answer 1

Answer:

i think table should be like this

class mark. frequency. CF

5-10. 2. 2

10-20. 5. 7.

20-30. 1. 8

30-40. 3. 11

40-50. 12. 23

50-60. 3. 26

60-70. 5. 31

70-80. 7. 38

n=36.

but I think there is some mistake in information because n and the last term of CF is all ways equal but here it is defferent.