Question

Find the value of frequency x and y in the following

frequency distribution Table if N = 100 and median is 32.

[5]​

Answer 1

Answer:

ANSWER

class f cf

0-10 10 10

10-20 x 10+x

20-30 25 35+x

30-40 30 65+x

40-50 y 65+x+y

50-60 10 75+x+y

75+x+y

75+x+y=100

x+y=25

f=30,h=10,cf=35+x,

2

n

=50

Median=l+(

f

2

n

−cf

)×h

32=(

30

50−35−x

)×10

32−30=

3

15−x

6=15−x

x=9

∴y=16