University of Melbourne · S2 2026 · FACULTY OF ECONOMICS

ECON90015 Managerial Economics

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The Complete Exam Bible · S2 2026

ECON90015 Overview

Managerial Economics
— A source-grounded ECON90015 guide to 20/30/50 architecture, model-to-decision chain, source and assumption control and the complete published assessment structure.
  • The University of Melbourne
  • Semester 2, 2026
  • a graduate coursework subject
  • 12.5 points

ECON90015 Managerial Economics applies microeconomic models, market structure and selected macroeconomic indicators to business and management decisions. It is taught within University of Melbourne Faculty of Business and Economics. It is a graduate coursework subject. It carries 12.5 points.

  • ECON90015 grading Mid-semester Test 20% · Individual Assignment 30% · End-of-semester Examination 50%
  • ECON90015 task mode Plan around this operating format: The final is a two-hour end-of-semester examination worth 50%.
  • ECON90015 pressure point The main transfer challenge is this: Choosing the right economic model and keeping movement along a curve separate from a shift of the curve, then linking the model result to firm behaviour, welfare or policy.
  • ECON90015 pass rule Before relying on the total mark, apply this control: No component-level hurdle is published in the captured current Subject Guide. This is source silence rather than a categorical claim that no further operational rule can appear in the live subject site.
ECON90015 · The University of Melbourne
An independent, AskSia-authored study guide. AskSia is not affiliated with, endorsed by, or sponsored by The University of Melbourne; the course code and name are used for identification only.
Assessment

How ECON90015 is assessed

ComponentWeightFormat
Mid-semester Test20%One-hour on-campus MCQ test covering the first six lecture weeks
Individual Assignment30%Individual 2,000-word assignment submitted as PDF through the LMS
End-of-semester Examination50%Two-hour examination; current format and permitted materials must be checked in the live LMS

The current structure is 20% on-campus mid-semester MCQ test, 30% individual 2,000-word assignment and 50% two-hour final examination. The captured guide does not publish the final question format or permitted materials. No component hurdle is published in the captured current guide; that is source silence, not a categorical negative.

Current dates · verify in LMS

Current ECON90015 dates

DateItemControl
11 Sep 2026 · 11:30–12:30Mid-semester TestOn-campus sitting; confirm venue and any change in the LMS
4 Oct 2026 · 23:59Individual Assignment2,000-word PDF submission

Dates are as published in the current course materials. Confirm exact deadlines and submission settings in the live LMS.

Contents · every chapter, one map

What ECON90015 covers

The sequence opens at Managerial Decisions, Models and the Assessment Route, develops its central analytical shift in Profit, Entry and Market Structure, and closes with Money, Inflation and Integrated Exam Reasoning.

01

Managerial Decisions, Models and the Assessment Route

20/30/50 architecture · model-to-decision chain · source and assumption control · map each assessment to the models, evidence and decision language it requires

Define 20/30/50 architecture

Managerial Decisions, Models and the Assessment Route is a quantitative decision problem built from 20/30/50 architecture, model-to-decision chain and source and assumption control.

  • 20/30/50 architecture
  • model-to-decision chain
  • source and assumption control
  • Applying 20/30/50 architecture
  • Limits of model-to-decision chain and source and assumption control
02

Supply, Demand and Competitive Equilibrium

demand and supply functions · movement versus shift · equilibrium price and quantity · solve for equilibrium and explain how one exogenous change affects price, quantity and stakeholders

Define demand and supply functions

Supply, Demand and Competitive Equilibrium is a quantitative decision problem built from demand and supply functions, movement versus shift and equilibrium price and quantity.

  • demand and supply functions
  • movement versus shift
  • equilibrium price and quantity
  • Applying demand and supply functions
  • Limits of movement versus shift and equilibrium price and quantity
03

Elasticities and Revenue Responses

point and arc elasticity · own-price responsiveness · income and cross-price effects · calculate the relevant elasticity and use its sign and magnitude to reason about revenue or market relationships

Define point and arc elasticity

Elasticities and Revenue Responses is a quantitative decision problem built from point and arc elasticity, own-price responsiveness and income and cross-price effects.

  • point and arc elasticity
  • own-price responsiveness
  • income and cross-price effects
  • Applying point and arc elasticity
  • Limits of own-price responsiveness and income and cross-price effects
04

Welfare, Efficiency and Gains from Trade

consumer surplus · producer surplus · total surplus · compare a market outcome with the efficient benchmark and identify who gains or loses

Define consumer surplus

Welfare, Efficiency and Gains from Trade is a quantitative decision problem built from consumer surplus, producer surplus and total surplus.

  • consumer surplus
  • producer surplus
  • total surplus
  • Applying consumer surplus
  • Limits of producer surplus and total surplus
05

Taxes, Subsidies and Externalities

tax incidence · deadweight loss · external cost and benefit · trace a policy wedge through behaviour, surplus and third-party effects

Define tax incidence

Taxes, Subsidies and Externalities is a quantitative decision problem built from tax incidence, deadweight loss and external cost and benefit.

  • tax incidence
  • deadweight loss
  • external cost and benefit
  • Applying tax incidence
  • Limits of deadweight loss and external cost and benefit
06

Production, Costs and Firm Boundaries

production function · marginal and average cost · scale, scope and learning · connect technology and cost behaviour to output, outsourcing and firm-boundary decisions

Define production function

Production, Costs and Firm Boundaries is a quantitative decision problem built from production function, marginal and average cost and scale, scope and learning.

  • production function
  • marginal and average cost
  • scale, scope and learning
  • Applying production function
  • Limits of marginal and average cost and scale, scope and learning
07

Profit, Entry and Market Structure

economic profit · entry and exit · market concentration · distinguish accounting from economic profit and predict how entry conditions affect sustainable returns

Define economic profit

Profit, Entry and Market Structure is a quantitative decision problem built from economic profit, entry and exit and market concentration.

  • economic profit
  • entry and exit
  • market concentration
  • Applying economic profit
  • Limits of entry and exit and market concentration
08

Perfect Competition and the Competitive Firm

price-taking behaviour · marginal revenue and marginal cost · shutdown and exit · select output using marginal reasoning and distinguish short-run shutdown from long-run exit

Define price-taking behaviour

Perfect Competition and the Competitive Firm is a quantitative decision problem built from price-taking behaviour, marginal revenue and marginal cost and shutdown and exit.

  • price-taking behaviour
  • marginal revenue and marginal cost
  • shutdown and exit
  • Applying price-taking behaviour
  • Limits of marginal revenue and marginal cost and shutdown and exit
09

Monopoly and Price Discrimination

market demand and marginal revenue · markup and elasticity · price discrimination conditions · derive monopoly output and test whether segmentation can support different prices

Define market demand and marginal revenue

Monopoly and Price Discrimination is a quantitative decision problem built from market demand and marginal revenue, markup and elasticity and price discrimination conditions.

  • market demand and marginal revenue
  • markup and elasticity
  • price discrimination conditions
  • Applying market demand and marginal revenue
  • Limits of markup and elasticity and price discrimination conditions
10

Monopolistic Competition, Oligopoly and Strategy

product differentiation · strategic interdependence · game-theoretic equilibrium · predict how a firm's best response changes when rivals can observe, commit or retaliate

Define product differentiation

Monopolistic Competition, Oligopoly and Strategy is a quantitative decision problem built from product differentiation, strategic interdependence and game-theoretic equilibrium.

  • product differentiation
  • strategic interdependence
  • game-theoretic equilibrium
  • Applying product differentiation
  • Limits of strategic interdependence and game-theoretic equilibrium
11

GDP, Economic Growth and the Business Environment

nominal and real GDP · productivity and growth · business-cycle conditions · separate price and quantity changes and connect aggregate conditions to a firm's demand, costs and planning horizon

Define nominal and real GDP

GDP, Economic Growth and the Business Environment is a quantitative decision problem built from nominal and real GDP, productivity and growth and business-cycle conditions.

  • nominal and real GDP
  • productivity and growth
  • business-cycle conditions
  • Applying nominal and real GDP
  • Limits of productivity and growth and business-cycle conditions
12

Money, Inflation and Integrated Exam Reasoning

money and banking · inflation and real values · model-selection under time pressure · connect monetary conditions to prices and decisions while rehearsing the full model-assumption-result chain

Define money and banking

Money, Inflation and Integrated Exam Reasoning is a quantitative decision problem built from money and banking, inflation and real values and model-selection under time pressure.

  • money and banking
  • inflation and real values
  • model-selection under time pressure
  • Applying money and banking
  • Limits of inflation and real values and model-selection under time pressure

It is positioned as a managerial economics subject whose exact course placement depends on the student's enrolled program.

The subject starts with how prices and quantities emerge, moves through elasticity, welfare, cost and strategic market behaviour, and finishes with growth, money and inflation.

Its recurring demand is not merely drawing a model but explaining which business decision changes when an assumption, market structure or policy intervention changes.

Assessment in ECON90015 is distributed as follows: 20% on-campus mid-semester multiple-choice test, 30% individual assignment of 2,000 words, and 50% two-hour end-of-semester examination

The operational assessment conditions matter here.

The final is a two-hour end-of-semester examination worth 50%.

The captured current Subject Guide does not publish its question format or permitted materials, so check the live LMS and official timetable for those conditions.

What makes ECON90015 demanding is concrete: Choosing the right economic model and keeping movement along a curve separate from a shift of the curve, then linking the model result to firm behaviour, welfare or policy.

Later topics add another scale change: students must move from individual firms and markets to GDP, growth, money and inflation without treating the same mechanism as universal.

No component-level hurdle is published in the captured current Subject Guide.

This is source silence rather than a categorical claim that no further operational rule can appear in the live subject site.

For enrolment planning, Use the current University of Melbourne Handbook to check prerequisites and prohibitions before enrolment.

The sequence opens at Managerial Decisions, Models and the Assessment Route, develops its central analytical shift in Profit, Entry and Market Structure, and closes with Money, Inflation and Integrated Exam Reasoning.

Worked example · free

Price, elasticity and revenue in one decision

Q [4 marks]. A manager raises price from $10 to $12 and quantity falls from 100 to 80. Use midpoint elasticity to advise whether revenue moved in the predicted direction.
  • 1Calculate the midpoint percentage change in quantity.
  • 1Calculate the midpoint percentage change in price.
  • 1Form and classify the price elasticity over this interval.
  • 1Check actual revenue and state the interval-specific limitation.
Midpoint quantity change is −20/90 and price change is 2/11, so elasticity is about −1.22: demand is elastic on this interval. Revenue falls from $1,000 to $960, consistent with the prediction, but the estimate is local to these two observations and does not prove the whole demand curve.
Sia tip — Always verify the economic prediction against the actual before-and-after revenue arithmetic.
Glossary

Key terms

Price elasticity of demand
The percentage change in quantity demanded divided by the percentage change in price, holding other demand conditions constant.
Supply and demand
A market framework relating quantities buyers wish to purchase and sellers wish to offer at alternative prices.
Market equilibrium
A price and quantity combination at which quantity demanded equals quantity supplied under the stated market conditions.
Consumer surplus
The difference between buyers' willingness to pay and the amount they actually pay for units purchased.
Deadweight loss
The value of mutually beneficial trades not realised because a distortion prevents the efficient market quantity.
Marginal cost
The additional total cost incurred when a firm produces one more unit of output.
Monopoly
A market structure in which one seller faces the market demand curve without a close competing supplier.
FAQ

ECON90015 FAQ

Which current ECON90015 dates are captured?

Mid-semester Test: 11 Sep 2026 · 11:30–12:30; Individual Assignment: 4 Oct 2026 · 23:59. Confirm any change and the exact submission setting in the live LMS.

How is ECON90015 assessed?

20% on-campus mid-semester multiple-choice test, 30% individual assignment of 2,000 words, and 50% two-hour end-of-semester examination

What is the ECON90015 exam or final-task format?

The final is a two-hour end-of-semester examination worth 50%. The captured current Subject Guide does not publish its question format or permitted materials, so check the live LMS and official timetable for those conditions.

Where do students usually lose marks in ECON90015?

Choosing the right economic model and keeping movement along a curve separate from a shift of the curve, then linking the model result to firm behaviour, welfare or policy. Later topics add another scale change: students must move from individual firms and markets to GDP, growth, money and inflation without treating the same mechanism as universal.

What prerequisites or restrictions apply to ECON90015?

Use the current University of Melbourne Handbook to check prerequisites and prohibitions before enrolment.

Is this ECON90015 resource an official university guide?

No. It is an independent ECON90015 study resource; current institutional instructions remain authoritative for assessment operation.

Chapter questions

Questions students ask in each ECON90015 chapter

What is the main task in Managerial Decisions, Models and the Assessment Route?
Map each assessment to the models, evidence and decision language it requires. Chapter 01 · Managerial Decisions, Models and the Assessment Route
What is the main task in Supply, Demand and Competitive Equilibrium?
Solve for equilibrium and explain how one exogenous change affects price, quantity and stakeholders. Chapter 02 · Supply, Demand and Competitive Equilibrium
What is the main task in Elasticities and Revenue Responses?
Calculate the relevant elasticity and use its sign and magnitude to reason about revenue or market relationships. Chapter 03 · Elasticities and Revenue Responses
What is the main task in Welfare, Efficiency and Gains from Trade?
Compare a market outcome with the efficient benchmark and identify who gains or loses. Chapter 04 · Welfare, Efficiency and Gains from Trade
What is the main task in Taxes, Subsidies and Externalities?
Trace a policy wedge through behaviour, surplus and third-party effects. Chapter 05 · Taxes, Subsidies and Externalities
What is the main task in Production, Costs and Firm Boundaries?
Connect technology and cost behaviour to output, outsourcing and firm-boundary decisions. Chapter 06 · Production, Costs and Firm Boundaries
What is the main task in Profit, Entry and Market Structure?
Distinguish accounting from economic profit and predict how entry conditions affect sustainable returns. Chapter 07 · Profit, Entry and Market Structure
What is the main task in Perfect Competition and the Competitive Firm?
Select output using marginal reasoning and distinguish short-run shutdown from long-run exit. Chapter 08 · Perfect Competition and the Competitive Firm
What is the main task in Monopoly and Price Discrimination?
Derive monopoly output and test whether segmentation can support different prices. Chapter 09 · Monopoly and Price Discrimination
What is the main task in Monopolistic Competition, Oligopoly and Strategy?
Predict how a firm's best response changes when rivals can observe, commit or retaliate. Chapter 10 · Monopolistic Competition, Oligopoly and Strategy
What is the main task in GDP, Economic Growth and the Business Environment?
Separate price and quantity changes and connect aggregate conditions to a firm's demand, costs and planning horizon. Chapter 11 · GDP, Economic Growth and the Business Environment
What is the main task in Money, Inflation and Integrated Exam Reasoning?
Connect monetary conditions to prices and decisions while rehearsing the full model-assumption-result chain. Chapter 12 · Money, Inflation and Integrated Exam Reasoning
Study strategy

How to study for the exam

Retrieve the course map, practise the recurring method—identify the decision variable and market structure, express the economic relationship, solve or compare the model and translate the result into a bounded business or policy implication—on changed scenarios, and verify every operational assessment detail in the live institutional system.

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