Consider a symmetric frequency polygon with points (10, 2), (20, 8), (30, 15), (40, 8), (50, 2). Because the polygon is symmetric about a vertical line, where (which class mark) does that line of symmetry lie?

Question

Accepted Answer

30. The frequencies are symmetric (2, 8, 15, 8, 2) about the middle point at class mark 30, so the axis of symmetry is x = 30.

Consider a symmetric frequency polygon with points (10, 2), (20, 8), (30, 15), (40, 8), (50, 2).
Because the polygon is symmetric about a vertical line, where (which class mark) does that line of symmetry lie?

Step-by-Step Solution

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More Class 9 Frequency Polygons practice

Consider a symmetric frequency polygon with points (10, 2), (20, 8), (30, 15), (40, 8), (50, 2).Because the polygon is symmetric about a vertical line, where (which class mark) does that line of symmetry lie?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Frequency Polygons practice

Consider a symmetric frequency polygon with points (10, 2), (20, 8), (30, 15), (40, 8), (50, 2).
Because the polygon is symmetric about a vertical line, where (which class mark) does that line of symmetry lie?