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Draw a Frequency Polygon from the Information Given in the Following Table. - Algebra

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Question

Draw a frequency polygon from the information given in the following table.

Age of blood donar (Years) No. of blood donars
Less than 20 0
Less than 25 30
75Less than 30 75
165Less than 35 127
Less than 40 165
Less than 45 185
Less than 50 197

Solution

 

Class (Age of blood donor) Class mark Frequency
(No. of donors)
co-ordinates
15-20 17.5 0 (17.5, 0)
20-25 22.5 30 (22.5, 30)
25-30 27.5 45 (27.5, 45)
30-35 32.5 52 (32.5, 52)
35-40 37.5 35 (37.5, 35)
40-45 42.5 20 (42.5, 20)
45-50 47.5 12 (47.5, 12)
50-55 52.5 0 (52.5, 0)

Draw the
axes. Plot points choosing a proper scale. Draw the frequency polygon.

  Is there an error in this question or solution?
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Draw a Frequency Polygon from the Information Given in the Following Table. Concept: Frequency Polygon.
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