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Draw the Frequency Polygon for the Following Frequency Distribution - Algebra

Draw the frequency polygon for the following frequency distribution

Rainfall (in cm) No. of Years
20 — 25 2
25 — 30 5
30 — 35 8
35 — 40 12
40 — 45 10
45 — 50 7
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Solution

Class mark No. of Years
17.5 0
22.5 2
27.5 5
32.5 8
37.5 12
42.5 10
47.5 7
52.5 0

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