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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...

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