็ต„ๅˆ้ ๆœŸๆ”ถ็›Š่จˆ็ฎ—ๅ™จ

E(Rp) = ฮฃ wแตขยทRแตข

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๐Ÿ“ ่จˆ็ฎ—ๅ…ฌๅผ
E(Rp) = ฮฃ w_iยทR_i

ๆŒ‰ๆฌŠ้‡ๅŠ ็ธฝ็š„็ต„ๅˆๆœŸๆœ›ๆ”ถ็›Šใ€‚

๐Ÿ“Œ ่จˆ็ฎ—่ชชๆ˜Ž
  • 60%ร—12%+40%ร—8% = 10.4%ใ€‚
  • ๆฌŠ้‡ๆ‡‰ๅˆ่จˆ 100%ใ€‚

๐Ÿ“š ๆทฑๅบฆ่งฃๆž๏ผš็ต„ๅˆ้ ๆœŸๆ”ถ็›Š๏ผˆๅŠ ๆฌŠๅนณๅ‡๏ผ‰

๐Ÿ’ก ๅธธ่ฆ‹ไฝฟ็”จๅ ดๆ™ฏ

60%/40%๏ผš้ ๆœŸ 12% ่ˆ‡ 8%
E(Rp) = 0.6ร—12% + 0.4ร—8% = 10.4%ใ€‚ๅณ็ต„ๅˆ้ ๆœŸๅนดๅŒ–็ด„ 10.4%ใ€‚

โ“ ๅธธ่ฆ‹ๅ•้กŒ๏ผˆFAQ๏ผ‰

ๆฌŠ้‡ๆŒ‰ๅธ‚ๅ€ผ้‚„ๆ˜ฏๆˆๆœฌ๏ผŸ
็”จ็•ถๅ‰ๅธ‚ๅ€ผๆฌŠ้‡ๆ›ดๅๆ˜ ๅฏฆ้š›ๆ•žๅฃ๏ผ›ๅ†ๅนณ่กกๆ™‚ๅ›žๅˆฐ็›ฎๆจ™ๆฌŠ้‡๏ผŒๆ”ถ็›Š้šจไน‹ๆ›ดๆ–ฐใ€‚