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Weighted Mean
If values $$x_1,x_2,\ldots,x_n$$ have weights $$w_1,w_2,\ldots,w_n$$:
$$\bar{x}_w=\frac{\sum w_ix_i}{\sum w_i}$$
Usage
- Used when different observations have different importance or weights.
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Weighted Mean
If values $$x_1,x_2,\ldots,x_n$$ have weights $$w_1,w_2,\ldots,w_n$$:
$$\bar{x}_w=\frac{\sum w_ix_i}{\sum w_i}$$
Usage
- Used when different observations have different importance or weights.
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