Question

Determine the median and the first and third quartile of the data given below.
Class Interval 0-10, 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80
Frequency 3, 10, 17, 7, 6, 4, 2, 1​

Answer 1

Answer:

frequency f is =17 and cumulative frequency c.f is 10

length of median class is 20

no.of terms n is 8

median= l+n/2-c.f/f*h

height is =10

20+4-10/17*20

=12.5