Agricultural Economics, Marketing and Statistics
What the exam tests
Agricultural Economics, Marketing and Statistics tests cost concepts, gross margin, benefit–cost analysis, break-even, marketing margins, price elasticity, and basic descriptive statistics used in farm surveys.
Core rules
- Variable costs change with output (seed, fertilizer, casual labour); fixed costs do not change in the short run (land rent, permanent labour, depreciation).
- Gross margin = gross income − variable costs. It is used to compare enterprises when fixed costs are similar.
- Benefit–cost ratio = present value of benefits ÷ present value of costs; a BCR above 1 is financially viable.
- Marketing margin = consumer price − producer price; it includes handling, transport, processing and traders' margins.
Worked example
Gross income = NPR 120,000/ha; variable cost = NPR 70,000/ha; fixed cost = NPR 30,000/ha. Gross margin = 120,000 − 70,000 = NPR 50,000/ha. Net profit = 120,000 − (70,000 + 30,000) = NPR 20,000/ha. BCR (simple, undiscounted) = 120,000 ÷ 100,000 = 1.20. Reasoning: gross margin ignores fixed costs, so it is not the same as profit.
Traps
Calling gross margin profit; adding fixed costs to compare enterprises with different land; confusing BCR with return on investment; and mixing nominal and real prices.