問(wèn)題已解決
老師我想問(wèn)一下方差計(jì)算過(guò)程是怎么計(jì)算的,計(jì)算需要全程帶上%嗎?我計(jì)算不對(duì)
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你好,請(qǐng)稍等,稍后發(fā)。
2024 10/08 20:28
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小敏敏老師 
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2024 10/08 20:33
同學(xué),計(jì)算過(guò)程如下。
方差=0.2× 0.062+0.6×0.012+0.2×0.092=0.0024
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老師我想問(wèn)一下方差計(jì)算過(guò)程是怎么計(jì)算的,計(jì)算需要全程帶上%嗎?我計(jì)算不對(duì)
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