Frequency Polygon

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Frequency Polygon
Example The table below represents the marks
obtained by children in an examination
Mark 1 10 11 20 21 30 31 40 41 50 51 60 61 70 71 80 81 90 91 100
Frequency 1 3 6 13 14 12 7 5 4 1
Represent this data on a frequency polygon
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Example The table below shows the distribution of
weekly wages in two small factories a) Draw a
frequency polygon to represent the data b)
Comment on the results
Weekly wage () 40-50 50-60 60-70 70-80 80-90 90-100 100-110 110-120 120-130 130-140
Factory A 1 3 7 11 12 17 20 15 4 3
Factory B 4 5 10 16 20 15 11 9 5 1
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