3: Demand and Supply
- Page ID
- 157474
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)- 3.1: Introduction to Demand and Supply
- This section discusses demand, supply, and market equilibrium, highlighting why organic food prices remain high despite local availability. It explains that, despite lower transportation costs, various market forces contribute to higher prices. Additionally, using gasoline as a case study, it illustrates how price fluctuations occur due to changes in supply and demand. The text underscores the significance of grasping these economic models to understand market behaviors better.
- 3.2: Demand, Supply, and Equilibrium in Markets for Goods and Services
- This section outlines essential economic concepts of demand and supply, highlighting their definitions, relationships, and market interactions. Demand reflects consumers' purchasing willingness at various prices, while supply indicates producers' selling readiness. The equilibrium price and quantity occur where demand equals supply, illustrated graphically. An example given is the equilibrium price of $1.40 per gallon with 600 million gallons exchanged.
- 3.3: Shifts in Demand and Supply for Goods and Services
- This section explores the factors influencing demand and supply in economics, focusing on demand curves shaped by consumer preferences, income, and demographics. Key influences include population changes towards an aging demographic and the effects of related goods on demand. Supply is impacted by production costs, which can shift supply curves due to factors like input prices, weather, technology, and government policies.
- 3.4: Changes in Equilibrium Price and Quantity- The Four-Step Process
- This page outlines a four-step process to analyze how economic events impact equilibrium price and quantity in markets. It explains shifts in demand and supply through examples such as weather affecting salmon supply and the shift from print to digital media. Additionally, it examines the U.S. Postal Services market, highlighting how increased labor costs and changing consumer preferences both decrease equilibrium quantity, while the effect on price remains unclear.
- 3.5: Price Ceilings and Price Floors
- This page examines government market interventions such as price controls, highlighting their effects. Price ceilings can lead to shortages, particularly in housing, while price floors may cause surpluses, as seen in agriculture. Despite economic proposals to reduce farm subsidies, political support persists due to cultural values and lobbying.
- 3.6: Demand, Supply, and Efficiency
- This page covers two main topics: economic efficiency in market dynamics and the rising demand for organic food. It explains consumer and producer surplus and the effects of price controls on market efficiency. Additionally, it discusses the growing consumer preference for organic products, driven by health concerns, which has led to increased sales and higher prices amid supply constraints.
- 3.7: Key Terms
- This page covers essential economic terms including demand, supply, and consumer behavior, defining key terms such as complements, substitutes, and types of goods. It discusses consumer, producer, and economic surplus, illustrating market transaction benefits. The page explains equilibrium, excess demand and supply, and the factors that cause shifts in demand and supply, while also addressing the impact of price controls like floors and ceilings on market efficiency.
- 3.8: Key Concepts and Summary
- This page sums demand, supply, and market equilibrium, detailing their schedules and curves and the laws governing them. It describes how equilibrium is reached when quantity demanded equals quantity supplied, the factors affecting shifts in the curves, and a four-step process for analyzing equilibrium changes.
Thumbnail: The price P of a product is determined by a balance between production at each price (supply S) and the desires of those with purchasing power at each price (demand D). The diagram shows a positive shift in demand from D1 to D2, resulting in an increase in price (P) and quantity sold (Q) of the product. (CC BY-SA 3.0; Paweł Zdziarski via Wikipedia)
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