求助如何求加权平均数,比如:假设投篮比赛,没人分别投10个球,甲投进4个,乙投进5个,丙投进8个,丁投进6个,X投进6个。求投进的加权平均数。平均数=(4+5+8+6+6)/5=5.那么加权平均数是
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![求助如何求加权平均数,比如:假设投篮比赛,没人分别投10个球,甲投进4个,乙投进5个,丙投进8个,丁投进6个,X投进6个。求投进的加权平均数。平均数=(4+5+8+6+6)/5=5.那么加权平均数是](/uploads/image/z/1797931-19-1.jpg?t=%E6%B1%82%E5%8A%A9%E5%A6%82%E4%BD%95%E6%B1%82%E5%8A%A0%E6%9D%83%E5%B9%B3%E5%9D%87%E6%95%B0%2C%E6%AF%94%E5%A6%82%EF%BC%9A%E5%81%87%E8%AE%BE%E6%8A%95%E7%AF%AE%E6%AF%94%E8%B5%9B%EF%BC%8C%E6%B2%A1%E4%BA%BA%E5%88%86%E5%88%AB%E6%8A%9510%E4%B8%AA%E7%90%83%EF%BC%8C%E7%94%B2%E6%8A%95%E8%BF%9B4%E4%B8%AA%EF%BC%8C%E4%B9%99%E6%8A%95%E8%BF%9B5%E4%B8%AA%EF%BC%8C%E4%B8%99%E6%8A%95%E8%BF%9B8%E4%B8%AA%EF%BC%8C%E4%B8%81%E6%8A%95%E8%BF%9B6%E4%B8%AA%EF%BC%8CX%E6%8A%95%E8%BF%9B6%E4%B8%AA%E3%80%82%E6%B1%82%E6%8A%95%E8%BF%9B%E7%9A%84%E5%8A%A0%E6%9D%83%E5%B9%B3%E5%9D%87%E6%95%B0%E3%80%82%E5%B9%B3%E5%9D%87%E6%95%B0%3D%EF%BC%884%2B5%2B8%2B6%2B6%EF%BC%89%2F5%3D5.%E9%82%A3%E4%B9%88%E5%8A%A0%E6%9D%83%E5%B9%B3%E5%9D%87%E6%95%B0%E6%98%AF)
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