Find the values of frequencies x and y in the following frequency distribution
table, if the total of the frequencies is 100 and median is 32.
Class 0-10 10-20 20-30 30-40 40-50 50-60 Total
Frequency | 10 X
25 30 Y
10
100
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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,2n=50
Median=l+(f2n−cf)×h
32=(3050−35−x)×10
32−30=315−x
6=15−x
x=9
∴y=16
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