Find the weighted mean of the following data: Value(x) = {10, 20}, Weight(w) = {2, 3}.
Answer: B
The formula for weighted mean is \(\frac{\sum(w_i x_i)}{\sum w_i}\).
\(\sum(w_i x_i) = (10 \times 2) + (20 \times 3) = 20 + 60 = 80\).
\(\sum w_i = 2 + 3 = 5\).
Weighted Mean = \(\frac{80}{5} = 16\).