问题已解决
這題怎么算啊,根號那里我一直算不對
FAILED
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同學(xué),是這個標準差算不對嗎?
2023 11/10 17:08
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m80258768 
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2023 11/10 17:11
怎么計算,我咋算都不得那個數(shù)
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朱飛飛老師 
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2023 11/10 17:11
先算根號里面的,算出來結(jié)果再開方
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朱飛飛老師 
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2023 11/10 17:15
一起按容易算錯,如果用搜狗V這樣按
(22%-12.7%)^2*0.1+(15%-12.7%)^2*0.6+(5%-12.7%)^2*0.3=0.002961
0.002961^0.5=0.0544150714417
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2023 11/10 17:22
但是不得這個數(shù)呢0.002961
FAILED
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朱飛飛老師 
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2023 11/10 17:23
你這個計算器是不是有問題,這個是電腦帶的計算機器嗎?
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2023 11/10 17:27
是shouji上的科學(xué)計算器,你能給我算遍嗎
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朱飛飛老師 
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2023 11/10 17:28
我試下哈,見鬼了還
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朱飛飛老師 
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2023 11/10 17:34
同學(xué)這個計算器的%有問題
FAILED
FAILED
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