✅ Notes below are pulled directly from the live course (video lectures, reading pages, interactive widgets), lesson by lesson — the SLM PDF is only a supplementary cross-check.
By the end of this module, learners should be able to: 1. Describe the methods and tools used in economic analysis. 2. Identify the various areas of study within economic analysis. 3. Explain how managerial economics helps in optimising resource allocation. 4. Differentiate between individual and market demand. 5. Identify the key determinants of demand. 6. Analyse how elasticity of supply influences production and pricing strategies. 7. Define market equilibrium and its significance. 8. Identify the reasons for demand forecasting in business.
The theory of demand and supply is a fundamental concept forming the backbone of market analysis and price determination. It explores the relationship between the quantity of a good or service demanded by consumers and the quantity supplied by producers at various price levels; their interaction influences the equilibrium price and quantity.
| Concept | Statement |
|---|---|
| Demand | Willingness and ability of consumers to purchase a specific quantity of a good/service at a given price, over a certain period |
| Law of demand | All else equal, as price falls quantity demanded rises (and vice versa) — inverse relationship, downward-sloping demand curve |
| Determinants of demand | Consumer income, prices of related goods, consumer preferences, expectations about future prices and income — changes shift the entire demand curve |
| Supply | Willingness and ability of producers to offer a specific quantity for sale at various prices, over a certain period |
| Law of supply | All else equal, as price rises quantity supplied rises (and vice versa) — direct relationship, upward-sloping supply curve |
| Determinants of supply | Prices of inputs, technological advancements, government policies, producer expectations — changes shift the entire supply curve |
| Equilibrium | Intersection of demand and supply curves where quantity demanded = quantity supplied; no tendency for price to change; if either curve shifts, a new equilibrium price and quantity result |
The theory of supply and demand explains how markets allocate resources efficiently and how prices are determined in a market economy; it provides a framework for analysing market dynamics, making informed business decisions and formulating effective economic policies.
Demand = the quantity of goods or services that consumers are willing and able to purchase at different prices during a specific period — a fundamental concept that helps determine prices in a market economy.
Law of demand: all else equal, as price rises quantity demanded falls, and vice versa. Shown by a downward-sloping demand curve (negative relationship between price and quantity demanded).
Economics is the study of how societies manage the production, distribution and consumption of goods and services — how limited resources are allocated to satisfy unlimited wants. Central concept: scarcity, forcing choices among competing alternatives (e.g. a farmer choosing a crop based on water availability).
Two causes of economic problems: (1) unlimited human wants, (2) scarcity of available resources. The essence of economics is the relationship between wants, efforts and satisfaction; it also covers national income, public finance and international trade.
| Thinker | Definition | Criticism |
|---|---|---|
| Adam Smith (1723–1790), An Inquiry into the Nature and Causes of the Wealth of Nations (1776) | Economics = the science of wealth; individuals pursuing self-interest unintentionally serve society's good through the "invisible hand" | Focused only on wealth, neglected human welfare; Ruskin and Carlyle called it the "dismal science" for promoting selfishness. Emphasis later shifted from wealth to welfare (wealth = a means, not an end) |
| Alfred Marshall (1842–1924), Principles of Economics (1890) | Economics = the study of mankind in the ordinary business of life; examines individual and social action to attain and use the material requisites of well-being | See below |
Marshall's ideas: economics examines the economic aspect of human existence and both individual and social actions that enhance economic well-being. He distinguishes material things (tangible: books, rice) from immaterial things (intangible: skills, developing a hybrid cotton variety) and confines economics to material things that promote welfare.
Criticisms of Marshall: 1. Excludes immaterial services (doctors, teachers) that also contribute to welfare. 2. Classifies things by ability to promote welfare, but items like liquor may not promote welfare yet are still economically significant. 3. Welfare is subjective — varies among individuals, countries and over time; depends on political, social and cultural aspects as well as wealth.
Smith = Wealth definition; Marshall = Welfare definition. Both criticised: Smith for ignoring welfare, Marshall for ignoring immaterial services and for a subjective welfare concept.
The scope of economics is its province or field of study: whether it is a science or an art, a positive or normative science, and its subject matter. (Video: environmental challenges example — stubble burning and air pollution in Delhi, weighing health costs against the cost of eco-friendly machines for farmers.)
| Science | Art |
|---|---|
| Systematically gathers, classifies and analyses facts about economic behaviour (e.g. human economic motives); deduces generalisations; often measurable in monetary terms, so measurable processes can be applied | Provides practical guidance for solving economic problems; a set of rules to achieve specific ends. Science teaches knowledge; art shows how to apply it — so economics is both, each complementing the other |
| Positive | Normative |
|---|---|
| Describes what is — factual analysis, no judgment on what ought to be; results based on available data | Evaluates what ought to be done to promote human welfare; involves ethical values, judgments of good/bad |
Example: "12% of India's labour force was unemployed last year" = positive (fact). "This rate is too high and should be reduced by …" = normative.
| Deductive method | Inductive method |
|---|---|
| Starts with general principles (self-evident or based on strict observation) and uses pure reasoning to derive implications. E.g. "traders earn profits in their businesses" is accepted without direct verification. Good for complex phenomena where cause and effect are intertwined; depends on the validity of the assumptions | Begins with observations of specific facts and reasons to general laws. E.g. consumption data of different income groups are collected, classified and analysed. Establishes empirical regularities; useful for generating hypotheses and theories |