2 4 6 8 10 12 14 16 18 20 22 24 10
Class interval
No of chickens that died
Adjustment factor
Frequency density
10-12
23
2/2=1
23/1=23
12-24
24
12/2=6
24/6=4
24-30
55
6/2=3
55/3=18.33
30-42
34
12/2=6
34/6=5.67
42-48
12
6/2=3
12/3=4
48-50
10
2/2=1
10/1=10
15
Dr. Asst. Prof(AGB) 20R Jayashree, 25 30 40 45
50
55