Match List-I with List-II
\[\begin{array}{|c|c|} \hline \textbf{Concepts} & \textbf{Formula} \\ \hline \text{(A) Weighted Mean} & \text{(I) \(\frac{\sum_{i=1}^{n} w_i x_i}{\sum_{i=1}^{n} w_i}\)} \\ \hline \text{(B) Grand Mean of Combined Data} & \text{(II) \(\frac{\sum_{i=1}^{n} x_i}{n}\)} \\ \hline \text{(C) Harmonic Mean} & \text{(III) \(\frac{n}{\sum_{i=1}^{n} \frac{1}{x_i}}\)} \\ \hline \text{(D) Geometric Mean} & \text{(IV) \(\left( \prod_{i=1}^{n} x_i \right)^{1/n}\)} \\ \hline \end{array}\]
Choose the correct answer from the options given below: