Power index may refer to:
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Banzhaf power index
The Banzhaf power index, named after John Banzhaf (originally invented by Lionel Penrose in 1946 and sometimes called Penrose–Banzhaf index; also known as the Banzhaf–Coleman index after James Samuel Coleman), is a power index defined by ...
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Shapley–Shubik power index
The Shapley–Shubik power index was formulated by Lloyd Shapley and Martin Shubik in 1954 to measure the powers of players in a voting game.
The constituents of a voting system, such as legislative bodies, executives, shareholders, individual leg ...
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