arithmetic mean 详细解释

arithmetic mean

n. 算术平均值, 等差中项

词形变化

形容词: arithmetical | 副词: arithmetically | 名词: arithmetician |

英英释义

名词 arithmetic mean:

the sum of the values of a random variable divided by the number of values

同义词:first moment, expectation, expected value

补充

arithmetic meanarithmetic meann.1.算术中项,算术平均