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Practice Welfare Economics Questions and Answers

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...
Completely randomized design is based on the principles of _________ and randomization only.
Completely Randomized Design provides maximum number of degree of freedom for the:
At a round table, n persons are seated on n chairs. The probability that two friends from same college are sitting next to each other, is:
The first four moments of a distribution about the origin are -1.5,17,-30 and 108. The third moment about the mean is:
A dice was thrown 400 times and 'six' resulted 80 times. The data is used to justify the hypothesis of an unbiased dice at 95% confidence. With reference t...
The sample sizes for two cases were 15 each with means as 104 and 114 respectively and variances as 200 and 510 respectively. Let the null hypothesis is t...
The variation among the observations of each specific class is known as:
X and Y are independent normal variables with mean 50 and 80 respectively and standard deviation as 4 and 3 respectively. What is the distribution of X+...
The coefficient of correlation is the _________ of coefficients of regression.
Which of the following satisfies the time and factor reversal test?
For a distribution, mean is 40, median is 40.5 and mode is 41. The distribution is:
The following observations 14, 19, 17, 20, 25 constitute a random sample from an unknown population with mean u and standard deviation σ. The point estim...
The mean deviation from an average A will be minimum, if A represents:
A man pedals cycle from his house to his office at a speed of 10 km/h and back from the office to his house at a speed of 15 km/h. His average speed (in km...
For a distribution, the mean is 10, variance is 16, Y1 is +1 and β2 is 4. The distribution is:

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