Practice Welfare Economics Questions and Answers

• If a discrete random variable X follows uniform distribution and assumes only the values 8, 9, 11, 15, 18, 20, the value of P(|X-14| < 5) will be:
• Marshall-Edgeworth Index number:
• The curve obtained by joining the points, whose x-coordinates are the upper limits of the class interval and y-coordinates are corresponding cumulative fre...
• The probability density function of a random variable X is f(x) = ( π /10) sin ( π x /5) ; 0 ≤ x ≤ 5. The first quartile of X is:
• 60% of the employees of a company are college graduates. Of these, 10% are in sales. Of the employees who did not graduate from college, 80% are in sales. ...
• By the method of moving averages, the seasonal index for four quarters equals to: ...
• 28 If r ₁₂ = +0.80, r13 = -0.40 and r23 = -0.56, then the square of multiple correlation coefficient (correct to four decimal places) R21.23 is equal t...
• If the multiple correlation coefficient of X1 on X2 and X3 is zero, then: ...
• The null hypothesis in ANOVA one-way classification, the study of the variances due to k different sources, is: ...
• The limits of multiple correlation coefficient R1.23 are:
• Second differencing in time series can help to eliminate which trend? (I) Quadratic trend (II) Linear trend
• The probability of getting 9 cards of the same suit in one hand at a game of bridge is ...
• Which of the following is NOT an approach for assigning the probability of the event?
• A B and C are three mutually exclusive and exhaustive events associated with a random experiment. If P(B) = (3/2) P(A) and P(C) = (1/2) P(B) then value of ...
• If Laspeyres price index of a commodity is 208 and Passche's price index of the same commodity is 52, the value of Fisher index number will be:
• Following two statements are related to regression coefficient (I) Independent of the change of origin (II) Independent of the change of scale  
• For the recorded observation, the coefficient of variation is 0.2 and the variance is 16. The arithmetic mean is:
• ...
• Which of the following approaches does multiplicative model have for the component of Time series Secular trend (7). Seasonal variation (S), Cyclical fluct...
• Let x and y be two variables with variance as 1990 and 796 with 11 and 9 number of observations respectively. The value of F(10, 8) at 5% level of signific...
• If Arithmetic mean and coefficient of variation of x are 10 and 40 respectively, then the variance of y = 10 – 2x is:
• Let MSA defines mean sum of squares due to factor A and MSE defines mean sum of squares due to error. If the null hypothesis of ANOVA for one way classific...
• If Z1, Z2,…Zn are n independent standard normal variates, then Σni=1 Z2i will follow:
• The incomes of the employees in a state is assumed to be normally distributed with mean ₹15,000 and variance ₹900. The median of the distribution of th...
• For a normal distribution, which of the following is true?
• The second quartile for the following data 38, 39, 40, 52, 59, 67, 73, 77, 149, 248 is:
• With reference to analysis of variance. which of the following statements is/are correct? (I) Change of origin will affect the value of F (II) Change of ...
• Which of the following is a sources of primary data?
• For a distribution with mean, median, mode and standard deviation 25, 24, 26 and 5 respectively, Karl Pearson's coefficient of skewness equals to:
• If xi | fi , i = 1,2,...n is a frequency distribution with standard deviation 15 and mean 30, the coefficient of variation will be equal to:
• At a reservation counter. passengers are arriving for booking the tickets in a Poisson fashion with mean rate 60 per hour. The kurtosis of the inter-arriva...