In a certain year , the ages of 130 cardiac patients,admitted in a hospital,are given in the following distribution
Age in years
20-24
24-28
28-32
32-36
36-40
40-44
44-48
48-52
52-56
56-60
Numbers of patients
3
5
9
12
15
2
X
22
14
y
If mode of the above data is 47 find the missing frequencies x and y
CLASS INTERVAL | FREQUENCY |
20 - 24 | 3 |
24 - 28 | 5 |
28 - 32 | 9 |
32 - 36 | 12 |
36 - 40 | 15 |
40 - 44 | 2 |
44 - 48 | x |
48 - 52 | 22 |
52 - 56 | 14 |
56 - 60 | y |
TOTAL | 82 + x + y |