Mahsulot hajmi o‘zgarishiga ishchilar soni, o‘rtacha ishlangan kun hamda bir kunga to‘g‘ri keladigan mahsulot hajmining ta’sirining tahlili
Ko‘rsatkichlar
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O‘tgan yil
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Haqiqatda
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Farqi (+;-)
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Ishchilar soni, kishi (X)
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203
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212
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+9
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Bir ishchiga to‘g‘ri keladigan o‘rtacha ishlangan kun, kishi kuni (Y)
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278
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270
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-8
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O‘rtacha ishlangan bir kunga to‘g‘ri keladigan mahsulot hajmi, ming so‘m (Z)
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104
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111
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+7
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Mahsulot hajmi, ming so‘m (F)
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5869136
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6353640
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484504
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F = X * Y* Z
1. Fx=(1/2*9)*(278*111+270*104) + 1/3*9*(-8)*7=+265053
2. Fy=(1/2*(-8))*(203*111+104*212)) + 1/3 *9*(-8)*7=-178492
3. Fz=(1/2*7)*(203*270+212*278) + 1/3 *9*(-8)*7=+397943
ΔF=ΔFx+ΔFy+ΔFz=265053 + (-178492) + 397943 =+484504
Logarifmlash usuli
Logarifmlash usuli multiplikativ modellarda omillar ta’sirini hisoblash uchun qo‘llaniladi.
Integral metoddan farqli ravishda logorifmlashda ko‘rsatkichlarning mutlaq o‘sishi emas, balki ularning o‘sish (pasayish) indeksi qo‘llaniladi.
z = xy
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lgz=lgx+lgy
lg∆z=lgz1+lgz0=( lgx1-lgx0) + (lgy1-lgy0)
lg(z1:z0)=lg(x1:x0)+ lg(y1:y0),
lgz1=lgx1 +lgy1 ; lgzo= (lgx0+lgy0)
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