Practice Research Questions and Answers

• Consider an economy described by the following equations:  C = 100 + 0.6 ∗ (Y − T) (consumption function)  I = 200 − 1000 ∗ r (investment funct...
• For two correlated variables x and y, if coefficient of correlation between x and y is 0.8014, variance of x and y are 16 and 25 respectively. Then the cov...
• If the regression coefficients of x on y and y on x are -1/4 and -1/9 respectively, then what is the correlation coefficient between x and y?
•  If r xy = 0, then:
• If r is negative, we know that :
• Whenrxy>0,thenbyxandbxyareboth: ...
•  Probability that A will be alive in 20 years is 0.7 and probability that B will be alive in 20 years is 0.6, then what is the probability that they both ...
• The credit manager at a Departmental store collects data on 100 of her customers. Of the 60 men, 40 have credit cards (C). Of the 40 women, 30 have credit ...
• The credit manager at a Departmental store collects data on 100 of her customers. Of the 60 men, 40 have credit cards (C). Of the 40 women, 30 have credit ...
• Assume that there are equal numbers of male and female students in a university. Of all male students, 10 per cent major in economics; and of all female st...
•  If f(x) is continuous for all real values of x and f(x) takes on only rational values, then if f(1)=1, the value of f(0) is
• For the following MA (3) process  y t  =  μ  +  Ε t  +  θ 1 Ε t -1  +  θ 2 Ε t -2  +  θ 3 Ε t -3  , where  σ t  is a zero mean white...
• Of 10 computer chips, 4 are defective. What is the probability of selecting 3 without replacement, only one of which is defective?
• Assume that there are equal numbers of male and female students in a university. Of all male students, 10 per cent major in economics; and of all female st...
• Which of the following statement is correct? 1. If autoregressive parameter (p) in an ARIMA model is 1, it means that there is no auto-correlation in the ...
• In a time-series forecasting problem, if the seasonal indices for quarters 1, 2, and 3 are 0.80, 0.90, and 0.95 respectively. What can you say about the se...
• Consider the following set of data:  {23.32 32.33 32.88 28.98 33.16 26.33 29.88 32.69 18.98 21.23 26.66 29.89} What is the lag-one sample autocorrelat...
• A sample poll of 100 voters reveals the following information about candidates A, B and C who are nominated for 3 different offices: 20 are in favour of ...
• If elasticity is ‘e’, and price of the product is B, MR=?
• What is the elasticity of demand given by x=100-50p at price = 10?
• A consumer has utility function given by : u{x1,x2} = min {2x1+x2, x1+2x2}. Given income m = 100, prices p1 = 20, p2 = 30, the amount of x1 in her utility ...
• Which of the following is not true Monopoly form of market organization may be result of increasing returns to scale Monopoly form of markets organiz...
•  Law of diminishing returns only applies to cases where
• Which of the following is correct regarding long run cost
• Assertion (A): There is a natural tendency to collude under oligopoly. Reason (R) : Inter-dependence of firms in oligopolistic markets. ...
• P=400, MC= 200, Lerner index = ?
• For goods x1 and x2 with prices P1 and P2, if dx1/dP2 is positive then,
• Which of the following four-firm concentration ratios is most consistent with monopolistic competition?
• Walraw’s Law states the following:
• A subsidy can actually cause the consumption of a subsidized good to fall if
• The marginal cost of production is MC=0.3x+4, determine the cost involved to increase production from 70 to 100 units.
• Which of the following statements about graphs of short-run cost curves is false?
• Which of the following is a possible change in total revenue that occurs if you increase the price of a good with unit elasticity?
• Zia wants to increase total revenue at his restaurant. The price elasticity of demand for several dishes that he serves are given in the table below. Pric...
• If the price elasticity of demand for apples is 3, then what will be the impact on total revenue if price increases?
• An economist calculated the cross-price elasticity of demand for nicknacks and gizmos and got -0.5. What can she conclude about the relationship between th...
• Which of the following statements about a firm's average cost curves is false?
• Suppose incomes double over a period of years. Which sorts of product will experience the biggest increases in price?
• Holly, Brian, Fred, Tracy, and Melanie have income elasticities for veggie burgers as given below: Person Income elasticity of demand Tracy 2 Brian 1 F...