- Af₁ = 8, f₂ = 10
- Bf₁ = 9, f₂ = 9
- Cf₁ = 12, f₂ = 6
- Df₁ = 10, f₂ = 8
Step-by-Step Solution
and . So .
Answer: D) f₁ = 10, f₂ = 8
In the distribution , 20, 30, 40, 50 with frequencies 5, f₁, 10, f₂, 7, the total frequency is 40 and the mean is 30.5. Find f₁ and f₂.
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