juft regression tahlil

juft regression tahlil 2-masala. topshiriq: 2.1. 1-masalada berilgan ma’lumotlarga asoslanib, 𝑁𝑌𝑆𝐸𝑖 indexiga 𝐶𝑃𝐼𝑖 indeksining ta’sirini ifodalovchi quyidagi model parametrlarini baholang: 𝑦𝑖 = 𝑎 + 𝑏 ∙ 𝑥𝑖 + 𝜀 2.2. olingan natijalarni tahlil qiling. echilishi. 2.1. �̂�𝑖 = 𝑎 + 𝑏 ∙ 𝑥𝑖 chiziqli regressiya tenglamasining 𝑎 va 𝑏 parametrlarini hisoblash uchun eng kichik kvadratlar usuli (ekku) dan foydalanamiz: { 𝑛 ∙ 𝑎 + 𝑏 ∙∑𝑥𝑖 =∑𝑦𝑖 𝑛 𝑖=1 𝑛 𝑖=1 𝑎 ∙∑𝑥𝑖 + 𝑏 ∙∑𝑥𝑖 2 𝑛 𝑖=1 =∑𝑦𝑖 ∙ 𝑥𝑖 𝑛 𝑖=1 𝑛 𝑖=1 shuningdek 𝑎 va 𝑏 parametrlarini quyidagi soddalashtirilgan formulalar orqali ham hisoblab topish mumkin: 𝑏 = 𝑦 ∙ 𝑥̅̅ ̅̅ ̅̅ − �̅� ∙ �̅� 𝑥2̅̅ ̅ − �̅�2 𝑎 = �̅� − 𝑏 ∙ …

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