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Questions and Answers

You want to run a Mincerian regression to find the effect of education on wages while controlling for individual time-invariant unobservable characteristics. Which of the proposed methods correctly achieves this?

  • Calculate the mean-deviation of wage and education for each individual, then run an OLS with the de-meaned variables.
  • For each individual, subtract the wage (and education) of period 1 from that of period 2, period 2 from period 3, and so on. Then run an OLS of the differenced variables.
  • Add n-1 dummy variables, one for each individual (except one) and then run an OLS.
  • All of the above. (correct)

Consider the following utility functions over two goods x and y:

u1(x,y) = ax + by u2(x,y) = x^a * y^b u3(x,y) = a ln(x) + b ln(y)

Which of the three utility functions have the same marginal rates of substitution for any given values of x and y?

  • u1(x,y) and u2(x,y)
  • u2(x,y) and u3(x,y) (correct)
  • u1(x,y) and u3(x,y)
  • None of the above

A social planner has a Utilitarian social welfare function. The planner assumes that all individuals in the society have identical utility functions with diminishing marginal utility of money. What is the impact of transferring money from the rich to the poor?

  • Not enough information to determine the change in social welfare
  • Leave social welfare unchanged
  • Decrease social welfare
  • Increase social welfare (correct)

Suppose a person choosing between fish (x) and money (y) has the following utility function: $u(x, y) = y + 10x - x^2$. Let the price of fish be 2 and the price of money be 1. If the person has a budget of 30, find the amount of fish the person can buy to maximise their utility.

<p>4 (C)</p> Signup and view all the answers

Under which of the following conditions will a tax increase NOT cause any deadweight loss?

<p>All of the above (D)</p> Signup and view all the answers

Consider the following payoff matrix between player 1 (rows) and player 2 (columns):

         H        M           L

h 2,2 3,3 4,4 m 3,5 5,1 2,4 l 4,2 2,2 5,3

What is the Nash Equilibrium in pure strategies in this game?

<p>There is no Nash Equilibrium in pure strategies (A)</p> Signup and view all the answers

When a binary categorical variable is coded as 0/1, what statistical measure does the sample proportion represent?

<p>The sample mean of the sequence of 1s and 0s. (C)</p> Signup and view all the answers

If events A and B are independent, which of the following statements regarding their relationship or probabilities is correct?

<p>A and B’ (B complement) are independent. (A)</p> Signup and view all the answers

Given three plots with varying distributions (Negative Direction, Symmetrical, and Positive Direction), how do the mean and median relate to each other across these plots?

<p>The mean is lower than the median for the plot on the left (Negative Direction), while it is higher than the median for the plot on the right (Positive direction). (C)</p> Signup and view all the answers

An oil company has independent projects in Asia (success probability 0.4) and Europe (success probability 0.7). If the Asian project fails, what is the probability that the European project also fails?

<p>0.3 (A)</p> Signup and view all the answers

Regarding hypothesis testing, which statement accurately reflects the approach to and interpretation of results?

<p>Both ii. and iii. are correct. (D)</p> Signup and view all the answers

Consider the regression equation $Y = \beta_0 + \beta_1x_2 + \beta_2(x*z) + \epsilon$. How does the variable 'z' affect the relationship between $x$ and $Y$?

<p>It moderates the relationship between $x$ and $Y$. (C)</p> Signup and view all the answers

Based on sectoral composition of GDP, what is the most accurate conclusion regarding the Indian economy's structural changes?

<p>The structural change in the Indian economy is mostly driven by the service sector. (C)</p> Signup and view all the answers

What is the value of the multiplier in an economy with a marginal propensity to consume (MPC) of 0.25?

<p>1.33 (B)</p> Signup and view all the answers

Economists in India have observed a steady decline in the employment elasticity of growth. What primarily contributes to this trend?

<p>Indian economic growth remains weakly connected to job creation. (A)</p> Signup and view all the answers

What implications arise from a Balance of Payments surplus for a country?

<p>The country lends capital to the rest of the world. (B)</p> Signup and view all the answers

As a government official responding to a financial market crisis, which policy measure demonstrably counters the crisis's escalation?

<p>Expansionary monetary policy (C)</p> Signup and view all the answers

Which scenario demonstrates a diminishing rate of marginal substitution between items A and B?

<p>The consumer is willing to give up increasingly smaller amounts of item B to obtain one more unit of item A. (B)</p> Signup and view all the answers

Based on the provided enjoyment levels, what is the Nash Equilibrium for Mallika and Azad's activity choice?

<p>Both players choose hockey. (D)</p> Signup and view all the answers

What is the likely outcome in a competitive market after the government imposes a tax?

<p>A deadweight loss occurs. (B)</p> Signup and view all the answers

Given the macroeconomic data (Consumption = 40, Investment = 10, Government Spending = 40, Exports = 15, Imports = 20), what is the aggregate demand in this country?

<p>85 (B)</p> Signup and view all the answers

Given the consumption function C = 10 + 0.5Y, Investment (I) = 10, Government Spending (G) = 30, Exports (X) = 15, and Imports (M) = 5, what is the equilibrium income?

<p>120 (B)</p> Signup and view all the answers

How is the value added of government production typically measured when calculating GDP?

<p>Using the cost of inputs, as the market price of public goods is usually unavailable. (D)</p> Signup and view all the answers

Consider two goods: A and B. If the cross-price elasticity of demand is positive, this indicates that:

<p>Goods A and B are substitutes. (D)</p> Signup and view all the answers

Suppose an economy experiences both inflation and a decrease in real GDP. Which of the following policy combinations would be MOST effective in addressing these issues?

<p>Increase government spending and decrease the money supply. (C)</p> Signup and view all the answers

Which scenario best illustrates a firm operating without the issue of moral hazard?

<p>A firm that employs workers and can observe how hard they are working. (C)</p> Signup and view all the answers

A student living in a hostel plays loud music at 1:35 AM. Which statement is true regarding externalities?

<p>This is a negative externality, potentially disturbing other residents trying to sleep. (C)</p> Signup and view all the answers

An indifference curve is shaped as a straight line. What does this indicate about the consumer's preferences?

<p>This exhibits that items A and B are perfect substitutes. (D)</p> Signup and view all the answers

Mallika and Bala's enjoyment levels for playing hockey or cricket are shown. Based solely on the provided payoffs, what is the Nash Equilibrium?

Bala

                                                 Cricket           Hockey
              Mallika
                                Cricket          3,5               1,1
                                Hockey           4,3               6,2

<p>The Nash equilibrium is (hockey, hockey) where both players choose hockey. (C)</p> Signup and view all the answers

In a competitive market, what is the likely outcome of a tariff?

<p>A deadweight loss. (D)</p> Signup and view all the answers

If autonomous consumption increases, what is the direct and immediate effect on the aggregate demand (AD) curve?

<p>The AD curve shifts to the right. (A)</p> Signup and view all the answers

Assume that the government implements a policy that successfully reduces information asymmetry in the market for used cars. What is the likely economic outcome?

<p>An increase in the overall quantity of used cars traded. (B)</p> Signup and view all the answers

A local government imposes a rent control that is below the market equilibrium rent. Which of the following scenarios is most likely to result?

<p>A shortage of available rental units. (B)</p> Signup and view all the answers

Which concept is the passage primarily illustrating regarding wealth distribution?

<p>The share of total wealth held by different segments of the population. (B)</p> Signup and view all the answers

What is the central contradiction that Ambedkar identifies in India's socio-political structure post-1950?

<p>Equality in politics (one person, one vote) but persistent inequality in social and economic life. (C)</p> Signup and view all the answers

Based on Ambedkar's statement, which of the following scenarios best represents the inequality he describes?

<p>A wealthy person's influence on policy decisions is greater than that of a poor person, despite their equal voting rights. (C)</p> Signup and view all the answers

Based on data from the India Lights platform, if region A shows consistently higher light output than region B, what inference can be most reliably drawn?

<p>Region A's economy is more active than region B's economy. (B)</p> Signup and view all the answers

According to the 'State of Working India 2023' report, what relationship exists between a husband's income and the likelihood of his wife working, particularly in urban areas?

<p>The likelihood of the wife working decreases up to a certain point (₹40,000), then increases as the husband's income continues to rise. (A)</p> Signup and view all the answers

Which statement best identifies the potential factors influencing a U-shaped relationship between a husband’s income and women working?

<p>Factors such as decreasing financial pressure, shifting gender dynamics due to increased household income, and access to better childcare play a role. (D)</p> Signup and view all the answers

What does it mean for votes to be differently weighted?

<p>Votes of those at the bottom of wealth distribution should matter more as opposed to those at the top. (C)</p> Signup and view all the answers

In the scenario that votes are differently weighted because of economic and social factors, what outcomes are most likely?

<p>Economically wealthy people have more influence on the political outcome than disadvantaged citizens. (A)</p> Signup and view all the answers

Flashcards

Mincerian Regression Methods

All three methods (A, B, and C) are valid approaches to address individual time-invariant unobservable characteristics in a Mincerian regression.

MRS Equivalence

u2(x,y)=xayb and u3(x,y)=a ln(x) + b ln(y) have the same marginal rates of substitution.

Utilitarian Welfare & Transfers

Increase social welfare because of the diminishing marginal utility of money.

Utility Maximization (Fish & Money)

The person can buy 5 units of fish to maximize their utility.

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Tax and Deadweight Loss

All of the above - inelastic supply, inelastic demand or lumpsum tax

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Sample Proportion

The sample proportion of a binary variable (0/1) is the same as calculating the average of the 0s and 1s.

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Independent Events & Complements

If events A and B are independent, the occurrence of A does not affect the probability of B (and vice versa). Therefore A and B' (B complement) are also independent.

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Mean vs. Median Skew

Negative Direction (left): Mean < Median. Positive Direction (right): Mean > Median. Symmetric: Mean = Median.

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Independent Events Probability

Because the success of the European project is independent of the Asian project, P(Europe not successful | Asia not successful) = P(Europe not successful) = 1 - 0.7 = 0.3

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Hypothesis Testing

In hypothesis testing, the null hypothesis is rejected only if the sample provides strong evidence against it. Researchers assume the null hypothesis is true until proven otherwise.

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Interaction Term Coefficient

The coefficient ( \beta_2 ) of the interaction term (x*z) represents how the effect of x on Y changes with z.

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Firm Observes Worker Effort

A firm that can monitor the effort level of its employees directly.

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Externality

A cost or benefit that affects a party who did not choose to incur that cost or benefit.

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Negative Externality

An externality where the impact on the third party is adverse.

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Perfect Substitutes

Goods the consumer is willing to trade at a constant rate.

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Nash Equilibrium

A stable state of a system involving the interaction of different participants, in which no participant can gain by a change of strategy as long as all the other participants remain unchanged.

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Deadweight Loss

A loss of economic efficiency that occurs when equilibrium for a good or service is not Pareto optimal.

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Tariff

A government-imposed tax on imports or exports.

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GDP Measurement

Total spending on goods/services produced within a country during a period.

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Structural Change (GDP)

Change in the proportions of different sectors (agriculture, industry, services) in a country's GDP.

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Multiplier Effect

The ratio of a change in equilibrium output to a change in autonomous spending.

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Employment Elasticity of Growth

The percentage change in output divided by the percentage change in employment.

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Balance of Payments Surplus

When a country's exports are greater than its imports.

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Tax in a Competitive Market

Intervention leads to a deadweight loss due to reduced efficiency and distortion of market outcomes.

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Aggregate Demand

Total demand for goods and services in an economy. Calculated as: C + I + G + (X - M)

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Equilibrium Income

The level of income where aggregate expenditure (C + I + G + X - M) equals total production (Y).

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Government Production in GDP

The value added of government production is calculated based on the cost of inputs, not market prices.

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Calculating Aggregate Demand

Calculated as the sum of Consumption (C), Investment (I), Government Spending (G), and Net Exports (X-M).

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Equilibrium Income (in macroeconomics)

The level of national income where total spending equals total output, leading to a stable economy.

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Gross Domestic product (GDP)

The real market value of all final goods and services produced within a country during a specific period.

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Wealth Distribution

Refers to how wealth is distributed among different groups (rich vs. poor) in a society.

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One Man, One Value (Critique)

Even with equal voting rights, social and economic inequalities can mean that some people's voices or needs are less effectively represented.

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Night Lights as Economic Indicator

Light output at night, observed via satellite, can indicate the level of economic activity in a region.

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U-Shaped Relationship: Women's Work and Husband's Income

As a husband's income increases, the likelihood of the wife working initially decreases, but after a certain income threshold (₹40,000), it starts to increase again.

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Life of Contradictions

A situation described by Ambedkar where political equality (one person, one vote) exists alongside social and economic inequality.

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Unequal Voters

A situation where political equality is undermined by existing social and economic disparities, leading to unequal influence among voters.

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More Lights, More Economy

The assumption that higher light intensity directly correlates with increased economic activity. More night lights means better economy.

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Husband's Income Threshold

Illustrates that women's participation in the workforce rises again once their husband's income passes a certain level.

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Study Notes

  • Pure public good example: Indian Army

  • Breaking up a monopoly into a competitive market leads to a higher price, assuming other factors remain constant.

  • Pareto efficiency is ensured through rationing.

  • Air pollution in Delhi is the most likely to generate a negative externality.

  • L-shaped indifference curve indicates perfect complements.

  • Utility function u(XA,XB) = XA² - 10XA + XB, with P_A = 2, P_B = 1, and a budget of 20, yields an utility-maximizing level of consumption for good A of 3.

  • If A=B/3 in a Lorenz curve, the Gini coefficient is 0.25 (given A is the blue shaded area).

  • If government increases GST on sports equipment and does not change the price of sports equipment, the incidence of the tax increase falls entirely on the producer.

  • If an expected utility maximizer with u(x) = √x is presented with a lottery where they may win Rs 10,000 with a 5% probability, the maximum they'll pay for lottery is Rs. 25.

  • In game theory, the Nash equilibrium (I,L) is Pareto efficient.

  • With 3% inflation and a 5% income increase, real income increases by 2%.

  • Crowding out: Higher government spending (G) leads to lower private investment.

  • In a 4-sector economy with C=Co + c(Y-tY), I=Io, G=Go, X=Xo, and M=Mo+mY, the multiplier is 1/(1-c+ct+m).

  • If GNP = 34,000 (Rs. crores) and NFIA = -3,000 (Rs. crores), then GDP = 37,000 (Rs. crores).

  • Multiplier value in an economy with MPC of 0.25 is 1.33.

  • A Phillips curve shows a temporary trade-off between inflation and unemployment.

  • In India, low interest rates is not likely a cause of the current high inflation.

  • Results indicate government spending multipliers are below unity.

  • In Good Times, multipliers in the US are below unity, regardless of slack in the economy.

  • If RBI increases the repo rate, it's usually to reduce inflation, not increase it.

  • Caste, religion, and gender affect educational outcomes in India.

  • In a capitalistic economy, private owners of capital hire wage labor to produce for profit.

  • The vast majority of workers are in the agricultural sector, but this sector has the lowest contribution to GDP in India.

  • Inequality of asset ownership > Inequality of income > Inequality of consumption.

  • India's recent economic growth = high growth in the last decades has been associated with low levels of employment growth

  • Roughly, the GDP per capita in India in 2017 is $2000

  • India's informal labor force is larger than its formal labor force

  • Liberalization example: De-licensing of industries

  • Primary reason for the fall in growth rates in 1965-66 = failure of monsoons

  • Given wage data, lack of information restricts wage comparison

  • From a histogram, the mean distribution is greater than the median.

  • An additional agricultural income = the mean, median, and variance of distribution would increase.

  • E(Y₁) = constant with zero variance.

  • In regressions on country-level data, Ruggedness is an index of terrain ruggedness.

  • If Africa is a dummy variable = 1 if the country is in Africa.

  • There is one unit increase in distance to coast in an African country = indicates a 0.948 average decrease in log(GDP)

  • Constant in regression 1 represents log(GDP) of a non-African country with ruggedness index of '0'.

  • African countries poorer & ruggedness increases per capita income.

  • Can't conclude that there's no crowding out of private investment.

  • One should understand the case for using Instrumental Variable approach.

  • Large sample t-statistic larger than 2 = evidence against the hypothesis, it is unlikely.

  • Mincerian regression: Three methods proposed calculate mean-deviation.

  • Three utility functions = u1(x,y)=ax+by, u2(x,y)=xᵃyb, u3(x,y)=a ln(x) + b In(y).

  • Following are considered similar rates of substitution for x and y = B) u2(x,y) and u3(x,y)

  • A Utilitarian social welfare with functions which have a diminishing marginal utility of money = will lead to greater wealth divide

  • Utility function: u(x, y) = y + 10x - x². Price of fish is 2, the price of money is 1 and budget is 30 = maximum of 4 units

  • Increase not cause loss, if supply or demand is inelastic.

  • Tax is lumpsump.

  • Understanding the payoffs and payoffmatrix between player 1/2 = is Pareto efficient

  • Choice between lottery of Rs 100. If person is choosing a sure amount of Rs 50 =, the person must be risk averse

  • Consider indifference curve of two goods; the slope is equal to the marginal rate of substitution between the two goods.

  • Understanding the different types of utility functions.

  • Understanding the concept of price elasticity and GST.

  • Traffic in Bangalore.

  • A government law restricting the number of vehicles.

  • Quantity theory: The Quantity Theory of Money increases the value of money supply and the velocity of money in an economy.

  • Government increasing infrastructural- Higher unemployment

  • Solow model: This predicts steady growth through productivity and capital accumulation.

  • Understanding multiplier in a closed economy. Interest rates etc.

  • If government increases its spending, inflation could increase.

  • Consequences of a fiscal expansion: An increase in the trade deficit

  • If real GDP is lower than Nominal GDP, inflation is positive.

  • Can be applied despite ex and cubic term =-√n indicates the degrees of freedom.

  • Sample proportion as see

  • In set theory. A and B complement are indepedent

  • One cannot use past wages to determine future wages

  • Even if weakly rejects null. it will reject

  • A Predicted Value regression model; the red are the residuals.

  • Mileage does effect car speeds; at 1% effects gas mileage.

  • Salary based on your good prediction turns out to be: Scatter

  • Level of significance always fixed for certain percent.

  • Why 1920 Great Divide: A) D) Population significanty rose after the Great War.

  • Speacial Act due to FDI.

  • Primary aims are prudece is budgetary decision.

  • Control Money Supply is not allowed.

  • MGNREGA cannot be appli cable to citizens everywhere.

  • 1979 rise caused by failure.

  • Surplus. total capital equals rate=10% A=B

  • Not true for all casts.

  • Labour is measured through working employment.

  • Not true for indiana Agri.

  • A) = D) Is not correct.

  • Need to make hypothesis

  • If uniform,

  • Best guess.

  • Heigh propor inches

  • Error of mean

  • Test means and procedures.

  • Insurance of 10 to be of accident

  • B/A = A/B, and so on.

  • Same decrease and increase

  • Free policy, easy rate.

  • Cannot simultaneously consumption decrease

"

==Start of Summeries

  • Public Good and the Indian Army: The Indian Army exemplifies a pure public good, providing national defense services to all citizens without direct individual payment.
  • Market Dynamics After Monopoly Breakup: When a market transitions from monopoly to competition, prices typically increase, assuming all other conditions remain the same.
  • Rational Consumption and Utility Maximization: Given an individual's utility function and budget constraints, understanding how to maximize consumption in a market.
  • Public Health and Negative Externalities: Air pollution in Delhi represents a clear example of a negative externality.
  • Gini Coefficient: The Gini coefficient represents an important metric for understanding wealth distribution.
  • Game Theory and Pareto Efficiency: The Nash equilibrium (I,L) is Pareto efficient.
  • Monetary Policy and Inflation: The effectiveness of monetary policy is influenced by the slopes of the IS and LM curves, which represent the equilibrium in the goods and money markets, respectively.
  • The RBI (Reserve Bank of India to reduce the rate by reducing interest and so forth. Indian labour more for lower.
  • The Mincer model is used to generate employment and wages.
  • Economists are to study in India.
  • The Indian economy in 1960s caused monsoons
  • The GINI is greater.

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