1)draw a frequency polygon to represent the following information: class 25-29 30-34 35-39 40-44 45-49 50-54 frequency 5 15 23 20 10 7
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Answered by
155
Solution :-
The class intervals given are not continuous so, first we will make it continuous by subtracting 0.5 from the lower limit of each class interval and adding 0.5 to the the upper limit of each class interval. After that we have to find the class marks (mid values) of each interval, that is (lower limit + upper limit)/2. The points of the frequency polygon for each class interval is (class marks, frequency).
Class Interval Class Marks (Mid Values) Frequency
24.5 - 29.5 27 5
29.5 - 34.5 32 15
34.5 - 39.5 37 23
39.5 - 44.5 42 20
44.5 - 49.5 47 10
49.5 - 54.5 52 7
Frequency Polygon is attached. Please have a look at it.
The class intervals given are not continuous so, first we will make it continuous by subtracting 0.5 from the lower limit of each class interval and adding 0.5 to the the upper limit of each class interval. After that we have to find the class marks (mid values) of each interval, that is (lower limit + upper limit)/2. The points of the frequency polygon for each class interval is (class marks, frequency).
Class Interval Class Marks (Mid Values) Frequency
24.5 - 29.5 27 5
29.5 - 34.5 32 15
34.5 - 39.5 37 23
39.5 - 44.5 42 20
44.5 - 49.5 47 10
49.5 - 54.5 52 7
Frequency Polygon is attached. Please have a look at it.
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kvnmurty:
very good .. thanks nice answer
Answered by
5
Answer:
d
Step-by-step explanation:
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