Question

of the life time of 400 neon lamps.
The following table gives the distribution of
Number of lamps
14
Lifetime in hours)
1500-2000
2000 - 2500
2500 - 3000
3000 - 3500
3500-4000
4000 - 4500
4500-5000
85
Find the median life time of a lamp.​

Answer 1

Answer:

this is latest paper .......

refer this , usefull to board exam