Question

The median of the following data is 16. Find the missing frequency a and b if
the total frequency is 70.
Class 0-5 5-10 10-15 | 15-20 20-25 25-30 30-35 35-40
Frequency 12 a 12 15 6 6 6​

Answer 1

sapos missing frequency is a

then

c.i _ f. _ c.f.

0-5_ 12. 12

5-10. a. 12+a

10-15. 12. 24+a

15-20. 15. 39+a

20-25. 6. 45+a

25-30. 6. 51+a

35-40. 6. 57+a

40-45. b. 57+a+b

total= 57+a+b.

Q1 =