Questions tagged [supply-and-demand]

Supply and Demand is an economic model of price determination in a market. Demand refers to how much (quantity) of a product or service is desired by buyers. Supply represents how much the market can offer.

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Why does short run market supply become more elastic with more firms

I have heard a justification along the lines of this: The supply curve becomes flatter (more elastic) with more firms in the market, because a given increase in price calls forth more production when ...
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Dynamic demand model in many good competitive markets and price optimization

This is a question about demand models, price optimization, dynamic pricing, big data, online learning, so I will cross-post in other communities. $\mathbf{Background}$ I am interested in dynamic ...
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3answers
629 views

Is the labor force participation rate related more to labour supply or to labour demand? Or both?

I have read several Labor Economics books, but I am stuck. Is the labor force participation rate related more to the labour supply or to the labour demand? If the labor force participation rate ...
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46 views

What would be the consequences of universal parity of buying power (wage value) and freedom to buy?

I've wondered about this for many, many, years..... maybe there's an answer (or several answers?) after all. As the global economy is set up, one reason a person in the US and EU can afford a nice ...
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105 views

Empirical Evidence of Cournot Competition?

Is there empirical evidence to validate the use of Cournot competition between multiple suppliers and a buyer? Are there models which extend Cournot competition to different levels in a larger supply ...
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9 views

Is There Literature on Individual Demand Cap (in Housing Market)?

Some (obv. very left) politicians in germany propose to impose that owning housing should be capped at what a person does use him/herself. That is, you should not be allowed to own housing for ...
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11 views

What were the historical theories of price formation before demand-supply relationship was well understood?

Markets have existed for thousands of years. People must had ideas about where prices came from. Before the clear formulation of demand/supply-based theory of prices, what were the historical theories ...
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35 views

Market shares of Nested Logit demand model

Consider a Nested Logit demand model with two nests, $N_1, N_2$: $N_1$ contains the outside option only (labelled "0"), $N_2$ contains all the remaining alternatives (labelled "$j=1,...,...
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34 views

Nash in demand functions!

I am searching for some types of games that are played in linear demand functions. Altough I hear that there is a vast literatrure for games that are played in the intercept or the slope of the demand ...
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42 views

$a\geq 0$, $x\succsim y$ implies $x+a\succsim y+a$ so the preference is linear?

$\succsim$ is a continuous and local non-satiate weak order. $x,y,a$ are vectors in $\mathbb R^n$ We say $a\geq0$ if all directions of the vector $a$ is greater or equal to zero. We want to prove (...
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43 views

Positive effects of a Tunisia-EU free trade agreement?

Tunisia might be signing a free trade agreement with the EU very soon. It's called ALECA or DCFTA. Many activists and labor unions are opposing such an agreement because it would result in losing ...
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68 views

Simultaneous Equation Models for Estimating Demand for a Good

Suppose in an economy there are $G$ available goods $X_1,...,X_G$. We can formulate a system of $3G+1$ equations as below: $$Q^d_g = A_{g1}+A_{g2}P_g+\mathbf{A}_g\mathbf{Z}^d_g+u_g\quad(g = 1,...,G)\...
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91 views

Modelling Supply Induced Demand

How would one go about modelling "supply induced demand" (SID) using the regular supply and demand model and how is SID different from price discrimination?
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48 views

Estimating Demand for Goods with n Choices

I have a data set containing n observations (rows) of mobile applications. The dependent variable is the number of installations -- the variable is categorical (with more than 2 categories). Therefore ...
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0answers
49 views

Is this Economic Engine Cold Start theory valid? (ie: could it work?)

First, I am not an economist so forgive me if the wording is not correct for the discipline. Second, I suspect this may end up being a "discussion" before it becomes an "answerable"...
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89 views

Did I do something wrong in calculating the market equilibrium?

Sorry for asking such a silly question, but something seems odd about my answer to this question: Suppose that two consumers, Jeff and Walt, are the only consumers in the market for carrots. Jeff’...
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347 views

Supply-side economics: reduction in tax

In a nutshell Supply-side economists support reductions in tax, because government revenue can increase (according to the Laffer curve) and businesses and consumers will be incentivised to invest (...
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1answer
2k views

Supply curve when the marginal cost is zero

The supply curve is built as the average marginal cost (MC), when the MC is equal or higher than the average cost (AC) The marginal cost increases, as a result of the opposite effect of marginal ...
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17 views

Why could a CO2 producer in the UK not just increase its price to match input price increases?

I'm confused about this UK story of the need for government intervention to "bail out" a CO2 producer: The UK government has agreed to subsidize a major US fertilizer manufacturer at a cost ...
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0answers
38 views

Why do supply curves that start at the origin have a PES value of 1?

In my economics book*, in the lesson explaining what price elasticity of supply is, it's written: Any supply curve that starts at the origin has a PES value equal to 1. The theoretical outcome means ...
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15 views

Effect of import quota on NCO, NX

I'm studying loanable funds from the book "Brief Principles of Macroeconomics, 6th ed". On page 307, the effects of an import quota are explained below. It said the net export rises, but NCO ...
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38 views

Unsolveable Demand/Utility Problem?

A consume has a preference relation on $\mathbb{R}^4_+$ with a utility function defined as $$ U(x_1,x_2,x_3)=(\ln(3x_1+2x_2+x_3))^3$$ Find the demand at prices $p=(1,1,1)$ and wage $4$. Attempt I ...
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33 views

graph of dependent income

I would need help with the following problem about consumer theory. Let us say that $X$ is the amount of days at the sea and $Y$ is the amount of days on the cottage. We have some utility function $u(...
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1answer
63 views

LM curve from money demand

Let $M^d (Y,r)=a+bY-cr$ where $M^d = M/P$ is the money demand in the economy. $a,b,c>0$. Derive $LM$. My try $M/P=a + b Y - c r$ $b Y = -a + \frac{M}{P} + c r$ $Y = -\frac{a}{b} + \frac{M}{b P} + \...
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45 views

Analytical approach to estimate equilibrium price for Real Estate Property

I am looking to calculate the equilibrium price, i.e an optimal price that I can set without affecting demand and maximize revenue. I've gathered historical data: occupancy rates, asking rents for ...
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0answers
19 views

What are the consequences of price-capping non-perishables undergoing temporary demand-spikes?

Due to the recent coronavirus outbreak (2020 for future readers), many consumers worldwide are overstocking on non-perishable products like toilet papers and hand sanitizers, in order to avoid ...
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42 views

Why would the price of goods rise up after increased consumption due to the outbreak?

On the wake of the COVID-19 outbreak, consumption of some goods will increase. But, my question is why so? My understanding is that, since aggregate demand for these goods has increased, supply can'...
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30 views

Considering existence of firms with sticky prices of goods, why are we sure that SRAS will be upward slopping?

One of theories that explains why the SRAS is upward slopping is the theory of sticky prices. For an example, suppose there is inflation. In the short run it will take different time for firms to ...
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28 views

Profits and Aggregate Supply

I feel like this is quite a stupid question, but I can't wrap my head around it. Why do suppliers make less of a good as profits drop? Intuitively, shouldn't they make more of the good in order to ...
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52 views

Economics of Selling Software

My understanding: Normally, selling a product has an increasing marginal cost per unit produced. Very often this increases more and more due to poor allocation of resources (diminishing returns). ...
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175 views

Does the reciprocal of the price elasticity of demand have an interpretation?

I have 2 related questions that i think are straightforward but am worried I have over-simplified! (i) Suppose the demand curve is downward sloping and the supply curve is upwards sloping. Suppose ...
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18 views

Supply elasticity on a piece-wise linear supply function

The supply elasticity at a point is the willingness to produce more or less after the price has changed (due to whatever reason?). $$\mu_{Q,P}=\frac{\partial Q_S/Q_S}{\partial P/P}=\frac{\partial Q_S}...
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492 views

Real world examples of supply curve shapes

I get the basic intuition that at higher prices, produces would be willing to produce more, but I feel like theory can only take my understanding so far. I want to know what are the real world ...
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22 views

Using capacity share instead of quantity market share in demand estimation (BLP)

If I were to use capacity share (as a proxy of quantity market share) in a demand estimation setup (such as BLP), are there ways to deal or interpret the measurement error? I would consider this ...
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1answer
116 views

How can you model/simulate the price/value of a good?

Let's say that you have a good which price can change quite often because of its demand. Let's assume that you developed an algorithm that changes continuously the supply of the good to make its value ...
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42 views

Deriving Single Good Demand Curve

came across a problem set that I had no clue how to tackle, but looks painfully simple. It's a market for electricity where households utility is represented by: U(E) = aE - 2mL2 (Household Utility) ...
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42 views

How does changing the Bank of England base rate work?

If we assume the demand for money (D above) is fixed in this position (for the purposes of this question), and supply (S) is fixed in this position, then how can the BoE change market interest rates (...
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43 views

How change in technology affects the price of labour and capital?

If the technology improves how does the price of labour and capital change. We take the neo-classical assumption that demand for each factor depends on it's marginal productivity, and demand and ...
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1k views

How price and quantity of ice cream sold changes when the price of yogurt reduces?

I am a newbie at economics and would appreciate help from the community. Question Use the model of supply and demand to explain how a fall in the price of frozen yogurt would affect the price of ...
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163 views

National Capital Outflow Question

I have the following example for an imposed quota on the importing of Japanese cars to Europe and it's relative effects: I am told that $NX=NCO$ (Net exports are equal to National Capital Outflow). I ...
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83 views

How can I model immigration and xenophobia economically using these equations?

I'm trying to put together a toy model for immigration ($I$), labor prices ($w$), and a measure of xenophobic/nationalistic sentiment ($A$). What I've come up with so far is the following: $$\frac{dI}...
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23 views

Can overreporting the oil production cause a fall of the oil prices

The top news today is a discovery that oil production was overreported by 800 thouthand barrel a day. Could it cause 5x price fall during the year? Such allegations challenge the market theory, IMO, ...
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22 views

Is there a simple way to write a model with firms/sectors with different demand elasticities?

I would like to write down a model where there are firms with different demand elasticities: For some firm's total profits increase and decrease a lot with increases and decreases in demand for their ...
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460 views

Calculating a cross price substitution/income effect

I am given a utility function $U(x,y)$, income $I$ and prices $p_x,p_y$. Then the price of $y$ rises to $p_y' = 3 \cdot p_y$. How are we supposed to calculate the substitution effect and income effect ...
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2k views

Difference between short run and long run supply curves?

We know that in short run supply curve is horizontal which means that prices remain rigid while quantity of supply adjusts according to demand. However, in long run this reverses. I know about some ...
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61 views

Market with substitutes: Response of prices and quantities

The demand function for theater tickets is $D_t(p_t,p_c)$, where $p_t$ stands for the price of theater tickets and $p_c$ stands for the price of cinema tickets. Supply of theater tickets is described ...
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0answers
86 views

how can devaluation of a nation's currency lead to increase in government expenditure, hence facilitating economic growth

how can devaluation of a nation's currency lead to increase in government expenditure, hence facilitating economic growth. I was reading through a textbook and saw that the devaluation of a nation's ...
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0answers
87 views

What will happen to property prices if local currency weakens against USD?

Say that the conversion rate of a local currency changes so that the currency is now relatively weaker against foreign currencies and as a result the inflation rate increases and as a result of that ...
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1answer
66 views

Practical advice for calculating optimal prices

The company I work for is interested in making the pricing for its products more quantitative. I researched the topic and I found some theory for calculating optimal pricing in Microeconomics texts ...
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19 views

How has the Chinese freight industry developed during last year?

The last year has been filled with so many unfamiliar circumstances such as Covid-19, and now with the rising tensions as well, I'm wondering how the Chinese freight industry is developing during ...