Refer to the following dataset that shows the class interval (and frequency in parentheses):

{0.0–0.4 (20); 0.5–0.9 (30); 1.0–1.4 (50); 1.5–1.9 (40); 2.0–2.4 (10);

2.5–2.9 (20); 3.0–3.4 (20); 3.5–3.9 (10)}

Construct a relative frequency histogram, a cumulative frequency histogram, a relative frequency (%) histogram, a cumulative relative frequency (%) histogram, a frequency polygon, and a relative frequency polygon. Describe the shapes of these graphs. What are the midpoint and limits of the interval, 2.0–2.4?