名词
中文翻译：加权算术指数数
同义词：
['weighted mean', 'weighted average', 'weighted sum']
例句：
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1.The weighted average of the students' scores is 85 out of 100.
学生成绩的加权平均分是85分。
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2.The weighted average of the profits is 300,000 dollars.
利润的加权平均值为30万美元。
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3.The weighted average of the temperatures in the city is -2 degrees Celsius.
该城市温度的加权平均值为-2摄氏度。