Page 4 - Lesson note- 2- Ch 14 Statistics (Frequency Distribution)
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33 2
34 2
36 2
37 1
38 2
39 3
41 1
42 1
43 2
44 3
45 2
46 1
47 1
48 1
49 1
This is an ungrouped frequency distribution table because we are considering the
individual marks are checking how many children.
Example-1. Three coins are tossed 30 times. Each time the number of heads occurring
was noted down as follows:
0, 1, 2, 2, 1, 2, 3, 1, 3, 0, 1, 3, 1, 1, 2, 2, 0, 1, 2, 1, 0, 3, 0, 2, 1, 1, 1, 3, 2, 0, 2.
Prepare a frequency distribution table.
Solution:
No of Frequency
heads
0 6
1 1
2 9
3 5
Example-2. Following data gives the number of children in 40 families:
1, 2, 6, 5, 1, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 4, 4, 3, 2, 2, 0, 0, 1, 2, 2, 4, 3, 2, 1, 0, 5, 1, 2, 4, 3,
4, 1, 6, 2, 2.
Represent it in the form of a frequency distribution table, taking classes 0-2, 2-4 etc.
Solution:
Class interval Frequency
0-2 11
