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30C121 Ekonometria

30C121 Ekonometria. https://cie.hkkk.fi/30C121. Petri Jylhä. R.1. S f(x)=36. P(X=0)=6/36=0,167. R.2. R.3. E(X) = S x i P(X=x i ). = 0*0,167+1*0,278+…+5*0,056. = 1,94. R.4. E(X) = S x i P(X=x i ). = 1*0,028+2*0,083+…+6*0,306. = 4,47. R.6. E(X 2 ) = S x i 2 P(X=x i ).

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30C121 Ekonometria

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  1. 30C121 Ekonometria https://cie.hkkk.fi/30C121 Petri Jylhä

  2. R.1 Sf(x)=36 P(X=0)=6/36=0,167

  3. R.2

  4. R.3 E(X) = SxiP(X=xi) = 0*0,167+1*0,278+…+5*0,056 = 1,94

  5. R.4 E(X) = SxiP(X=xi) = 1*0,028+2*0,083+…+6*0,306 = 4,47

  6. R.6 E(X2) = Sxi2P(X=xi) = 0*0,167+1*0,278+…+25*0,056 = 5,83

  7. R.7 E(X2) = Sxi2P(X=xi) = 1*0,028+4*0,083+…+36*0,306 = 21,97

  8. R.9 m = 1,94 s2X = Spi(xi-m)2 = 0,167*(-1,94)2+…+0,056*(3,06)2 = 2,05 = 1,43

  9. R.10 m = 4,47 s2X = Spi(xi-m)2 = 0,028*(-3,47)2+…+0,306*(1,53)2 = 1,97 = 1,40

  10. R.11 E(X2) = 5,83 m = 1,94 s2X = E(X2)-m2 = 5,83-1,942 = 2,05

  11. R.11 E(X2) = 21,97 m = 4,47 s2X = E(X2)-m2 = 21,97-4,472 = 1,97

  12. R.20

  13. 1.1

  14. 1.3

  15. 1.6

  16. 1.6 jatkoa...

  17. 1.6 jatkoa...

  18. 1.7

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