Ekonometrika – bu:-?


Agar Y = V + W bо‘lsa, Cov(X, Y) aniqlovchi bandni kо‘rsating: ?


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Agar Y = V + W bо‘lsa, Cov(X, Y) aniqlovchi bandni kо‘rsating: ? :

{= Cov(X, Y) = Cov(X, V) + Cov(X, W);



  1. Agar Y = bZ (bu yerda b - konstanta) bо‘lsa, Cov(X, Y) aniqlovchi bandni kо‘rsating: ? :

{= Cov(X, Y) = Cov(X, bZ) = bCov(X, Z);



  1. Agar Y = b (bu erda b-konstanta) bо‘lsa, Cov(X, Y) aniqlovchi bandni kо‘rsating: ? :

{= Cov(X, Y) = Cov(X, b) = 0;



  1. Agar Y = V + W bо‘lsa, Var(Y) aniqlovchi bandni kо‘rsating: ? :

{= Var(Y) = Var(V) + Var(W) + 2Cov(V, W);



  1. Agar Y = bZ (bu erda b-konstanta) bо‘lsa, Var(Y) aniqlovchi bandni kо‘rsating: ? :

{= Var(Y) = b2Var(Z);



  1. Agar Y = b (bu erda b konstanta) bо‘lsa, Var(Y) aniqlovchi bandni kо‘rsating: ? :

{= Var(Y) = 0;



  1. Agar Y = V + b (bu erda b-konstanta) bо‘lsa, Var(Y) aniqlovchi bandni kо‘rsating: ? :

{= Var(Y) = Var(V).



  1. Statistik prognozlashda qо‘llanadigan usulni kо‘rsating: ? :

{= Ekstrapolyasiya usuli;

  1. Kо‘p omilli chiziqli bog‘lanishni kо‘rsating: ? :

{= Yx=a0+a1X1+a2X2+…+anXn



  1. Ekonometrik modelda qatnashadigan omillarni tanlashda qо‘llanadigan usulni kо‘rsating: ? :

{= Korrelyatsion tahlil usuli;



  1. Natijaviy kо‘rsatkich va unga ta’sir etuvchi omillar о‘rtasidagi bog‘lanish zichligini aniqlovchi koeffitsiyent: ? :

{= Korrelyatsiya koeffitsiyenti;




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