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指数

noun

(economics) index - a single number calculated from an array of prices or of quantities.

経済の成長率は、指数を用いて計算されます。

The growth rate of the economy is calculated using an index.

意味（1）

(economics) index - a single number calculated from an array of prices or of quantities.

意味（2）

(mathematics) exponent, power - a product of equal factors. Notation and usage: xⁿ, read as x to the power of n or x to the nth power, denotes x × x × ... × x, in which x appears n times, where n is called the exponent; the definition is extended to non-integer and complex exponents.