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2020-10-12 23:52b和c是什么意思?
所屬:CFA Level I > Quantitative Methods 視頻位置 相關(guān)試題
來(lái)源: 視頻位置 相關(guān)試題
1個(gè)回答
Evian, CFA助教
2020-10-13 09:48
該回答已被題主采納
└(^o^)┘你好同學(xué),
A difference in means test only if the variances of monthly returns are equal for the two stocks.
僅當(dāng)兩組月數(shù)據(jù)的方差相等時(shí),使用“A difference in means test”
A difference in means test with pooled variances from the two samples.
使用“A difference in means test”,其中的樣本的綜合方差pooled variance也要考慮到。
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