State Agriculture Officer /General Awareness & Current Affairs

Economic terms

Indian Economy · free study notes

Economic Terms – Study Notes for State Agriculture Officer

General Awareness & Current Affairs

Why these notes matter
The State Agriculture Officer (SAO) exam requires a firm grasp of economic terminology—both at the macro‑level (GDP, CPI, etc.) and at the micro‑level (elasticity, marginal cost, etc.). Understanding the derivations and nuances of each term will help you answer the analytical questions in the exam’s “Economic Terms” section and also prepare you for related policy debates in the agricultural sector.


1. Macro‑Economics – Key Terms

Term Definition Key Formula / Derivation Units / Notes
Gross Domestic Product (GDP) Total monetary value of all final goods & services produced within a country’s borders in a period. GDP = C + I + G + (X – M) (Consumption + Investment + Government spending + Net exports) In ₹ billions; can be nominal or real (inflation‑adjusted).
Gross National Product (GNP) Total value of goods & services produced by a country’s residents (domestic & abroad). GNP = GDP + (Income earned abroad – Income paid abroad) Includes remittances.
Net Domestic Product (NDP) GDP minus depreciation (capital consumption). NDP = GDP – Depreciation Depreciation = wear & tear on capital assets.
Net National Product (NNP) NDP minus net factor income from abroad. NNP = NDP – (Income paid abroad – Income earned abroad) Equivalent to NDP + net factor income.
Consumer Price Index (CPI) Weighted average price of a basket of consumer goods & services. CPI = (Cost of basket in current year ÷ Cost of basket in base year) × 100 Basis: 100 in a chosen base year.
Wholesale Price Index (WPI) Weighted average price of selected goods at the wholesale level. Same formula as CPI but with wholesale goods. CPI > WPI for consumer‑driven inflation.
Inflation Rate Year‑on‑year percentage change in price level. Inflation (%) = [(CPI₂ – CPI₁)/CPI₁] × 100 Usually measured on a month‑to‑month or year‑on‑year basis.
Deflation Negative inflation – falling price levels. Same formula; result < 0. Rare but can signal deep recession.
Recession Two successive quarters of negative GDP growth. Recession if GDP growth < 0 for ≥2 quarters Triggers fiscal stimulus.
Economic Growth Rate Percentage change in real GDP. Growth (%) = [(GDP₂ – GDP₁)/GDP₁] × 100 Real GDP removes inflation effect.

Tricky Points (Macro)

Misconception Clarification
CPI ≠ WPI CPI measures consumer‑level price changes; WPI at wholesale level. CPI often higher due to consumer mark‑ups.
GDP vs GNP GDP counts where production occurs; GNP counts who produces, regardless of location.
Real vs Nominal GDP Real GDP adjusts for price changes; nominal does not.
Depreciation Only physical depreciation, not economic depreciation.

2. Micro‑Economics – Core Concepts

Term Definition Formula / Derivation Notes
Supply & Demand Relationship between quantity of a good and its price. Law of Demand: ( Q_d = f(P) ) decreasing; Law of Supply: ( Q_s = g(P) ) increasing. Equilibrium when ( Q_d = Q_s ).
Price Elasticity of Demand (PED) Responsiveness of quantity demanded to price change. PED = (ΔQ/Q) ÷ (ΔP/P) PED > 1 → elastic; < 1 → inelastic.
Income Elasticity of Demand (YED) Responsiveness of quantity demanded to income change. YED = (ΔQ/Q) ÷ (ΔI/I) YED > 0 → normal good; < 0 → inferior good

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