木同學(xué)
2022-11-16 17:46為什么選C
Julie Moon is an energy analyst examining electricity, oil, and natural gas consumption in different regions over different seasons. She ran a simple regression explaining the variation in energy consumption as a function of temperature. The total variation of the dependent variable was 140.58, and
所屬：CFA Level I > Quantitative Methods 視頻位置 相關(guān)試題
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Evian, CFA助教
2022-11-16 19:00
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ヾ(?°?°?)??你好同學(xué)，
Julie Moon is an energy analyst examining electricity, oil, and natural gas consumption in different regions over different seasons. She ran a simple regression explaining the variation in energy consumption as a function of temperature. The total variation of the dependent variable was 140.58, and the explained variation was 60.16. She had 60 monthly observations. The sample standard deviation of monthly energy consumption is closest to:
monthly energy consumption是dependent variable, Y。而計(jì)算因變量Y的樣本方差，等于因變量的總偏差除以（n-1）相關(guān)的，那么因變量Y樣本標(biāo)準(zhǔn)差就等于根號(hào)下樣本方差，計(jì)算結(jié)果為：
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