Question

Find the mode:

Mark	Persons
0-10	4
10-20	6
20-30	16
30-40	8
40-50	6

• A. 15
• B. 35.5
• C. 25.5
• D. 50

Answer 1

Answer:

C. 25.5

Mode = l + (f₁ - f₀)/(2f₁ - f₀ - f₂₎ × h

l = 20, h = 10

f₁ = 16, f₂ = 8 , f_{0 =} 6

Mode = 20 + (16 - 6)/(2×16 - 6 - 8) × 10

= 20 + (10)/(18) × 10

= 25.5