(i) To find the class containing the upper quartile, calculate the position of the upper quartile in the ordered data set. The upper quartile position is given by \( \frac{3}{4} \times 104 = 78 \). Cumulative frequencies are: 8, 33, 61, 92, 104. The 78th value falls in the class 5.5–7.0 cm.

(ii) To draw the histogram, calculate the frequency density for each class using the formula \( \text{Frequency Density} = \frac{\text{Frequency}}{\text{Class Width}} \).

• Class 2.0–3.5: \( \text{Width} = 1.5,\ \text{Frequency} = 8,\ \text{Density} = \frac{8}{1.5} = 5.33 \)
• Class 3.5–4.5: \( \text{Width} = 1.0,\ \text{Frequency} = 25,\ \text{Density} = 25 \)
• Class 4.5–5.5: \( \text{Width} = 1.0,\ \text{Frequency} = 28,\ \text{Density} = 28 \)
• Class 5.5–7.0: \( \text{Width} = 1.5,\ \text{Frequency} = 31,\ \text{Density} = \frac{31}{1.5} = 20.7 \)
• Class 7.0–9.0: \( \text{Width} = 2.0,\ \text{Frequency} = 12,\ \text{Density} = \frac{12}{2.0} = 6 \)

Draw bars with these heights and ensure correct labels and bar widths with no gaps.