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老師,麻煩你把它列出算式的得數(shù)給我一下,我怎么得不出這個數(shù)來呢
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您好!很高興為您解答,請稍等
2023 09/15 11:37

廖君老師 

2023 09/15 11:42
您好,我計算A股票標(biāo)準(zhǔn)差(0.26-0.2245)*(0.26-0.2245)*0.1%2b(0.11-0.2245)*(0.11-0.2245)*0.1%2b(0.15-0.2245)*(0.15-0.2245)*0.2%2b(0.27-0.2245)*(0.27-0.2245)*0.25%2b(0.21-0.2245)*(0.21-0.2245)*0.2%2b(0.32-0.2245)*(0.32-0.2245)*0.15=0.00447475,然后開根號POWER(0.00447475,1/2)=0.066893572

m80258768 

2023 09/15 11:47
老師,2b是什么意思

廖君老師 

2023 09/15 11:53
您好,又顯示異常了,是加號,我截圖哈
FAILED
