An expert guide to Cambridge International AS Level Economics (9708). This pack highlights core examination metrics, common candidate misconceptions regarding market failure, macroeconomic graphs, and terms of trade, and provides an analysis of the exact requirements needed to secure Level 3 analytical and Level 2 evaluative marks in the essay papers.
อ่าน 5 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
2
คะแนนเต็ม
90
เวลาสอบ
3ชม.
ประเภทคำถาม
4
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1
1ชม.
30
—
—
—
Paper 2
2ชม.
60
—
—
—
เกณฑ์เกรด
ABCDE
ข้อกำหนดเครื่องคิดเลข
A silent scientific calculator is required where the syllabus permits one. It must NOT be graphical, programmable, or capable of symbolic algebra (CAS), and it must contain no stored programs or notes.
วัตถุประสงค์: Tabulate \(y\) across a range of \(x\) to locate sign changes (roots) and approximate maxima/minima.
ใช้เมื่อใด: Solving or sketching a function when you want to find where its graph crosses or turns.
ขั้นตอน
Enter the function in TABLE mode, set the start, end and step, then read where the sign of \(y\) changes or where it peaks.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Statistics mode (mean, SD & regression)
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Read the mean \(\bar{x}\) and standard deviation directly, and the gradient/intercept (and \(r\)) of a linear regression for bivariate data.
ใช้เมื่อใด: Any data-handling, statistics, or required-practical analysis question.
ขั้นตอน
Enter the data in STAT mode (1-VAR or A+BX), then recall \(\bar{x}\), \(\sigma\) or the regression coefficients.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Carry exact values with Ans & memory
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Keep full-precision intermediate values to avoid rounding errors.
ใช้เมื่อใด: Multi-step calculations where premature rounding loses the final accuracy mark.
ขั้นตอน
Use Ans, STO/RCL or the M+ memory to reuse the unrounded result of each step; round only the final answer.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Equation solver — to CHECK your working
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Use the built-in EQN/SOLVE mode to verify roots of quadratics or simultaneous equations you have already solved by algebra.
ใช้เมื่อใด: As a check only, after solving by hand.
ขั้นตอน
Enter the coefficients in EQN mode (or use SOLVE) and confirm they match your worked solution.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 4Classification of goods and services
Confusing public sector provision with the economic definition of public goods (e.g. state-provided healthcare/education/roads).
วิธีหลีกเลี่ยง: Define public goods strictly by their two non-excludable and non-rivalrous economic characteristics. State education and roads are merit/private goods because they are rival and excludable.
Shifting the PPC to the left to represent unemployment, or drawing a PPC that does not touch both axes.
วิธีหลีกเลี่ยง: To show unemployed resources, keep the PPC stationary and place a point inside the curve. Ensure PPC diagrams touch both axes cleanly and are labeled with specific outputs.
3highคะแนนที่เกี่ยวข้อง: 4Methods and effects of government intervention in markets
Providing one-sided analysis in Paper 2 Part (b) essays (12-mark questions), which limits the evaluation score to zero.
วิธีหลีกเลี่ยง: Always structure your Part (b) essays with a balanced, two-sided argument (advantages vs. disadvantages or policy A vs. policy B) before drawing a justified conclusion.
4mediumคะแนนที่เกี่ยวข้อง: 2Price stability
Confusing disinflation with deflation on percentage price change graphs, leading to incorrect macroeconomic analyses.
วิธีหลีกเลี่ยง: Remember that disinflation is a fall in the inflation rate (prices are still rising, but slower). Deflation only occurs when the inflation rate falls below zero percent.
5mediumคะแนนที่เกี่ยวข้อง: 4Policies to correct imbalances in the current account of the balance of payments
Confusing 'Terms of Trade' (an index of relative prices) with the monetary 'Balance of Trade' or current account value.
วิธีหลีกเลี่ยง: Define terms of trade explicitly as the ratio of an index of export prices to an index of import prices: \( (P_x / P_m) \times 100 \). Do not confuse this with physical export revenues and import costs.
6highคะแนนที่เกี่ยวข้อง: 2Aggregate Demand and Aggregate Supply analysis
Labeling macroeconomic AD/AS diagrams with micro concepts (P, Q) instead of Price Level (PL) and Real GDP (Y).
วิธีหลีกเลี่ยง: Always label the vertical axis as 'Price Level' (PL) and the horizontal axis as 'Real GDP' or 'National Output' (Y) in all macroeconomic AD/AS questions.
7mediumคะแนนที่เกี่ยวข้อง: 1The reasons for international trade
Failing to construct proper opportunity cost matrices when solving comparative advantage problems, leading to incorrect calculations.
วิธีหลีกเลี่ยง: Always write out a structured 2x2 matrix of opportunity costs for both countries and both goods. Calculate the exact opportunity cost of producing 1 unit of a good before determining trade viability.
8highคะแนนที่เกี่ยวข้อง: 1Current account of the balance of payments
Classifying worker remittances as Primary Income instead of Secondary Income in the balance of payments.
วิธีหลีกเลี่ยง: Classify worker remittances (personal transfers) strictly under Secondary Income, the current transfers section of the current account. Do not confuse them with compensation of employees for cross-border/seasonal workers, which is the separate item recorded under Primary Income.