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Practice Welfare Economics Questions and Answers

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:
The problem of statistics is given in two sections of same standard. The odds against for section X to solve the problem are 4:3 and odds in favor to secti...
For making frequency distribution, the number of classes used depends upon:
With which characteristic movement of a time series would you associate increasing demand of smaller automobiles?
For the discrete distribution, the Pearson's coefficient of skewness β2 is always:
The square of normal variate with mean 0 and variance 1 follows:
Approximately, the coefficient of variation for the given data where Pearson's second measure of skewness = 0.42, arithmetic mean- 86 and median 80, is:
In one way ANOVA, σ2 is estimated by:
If ten coins are tossed simultaneously, then the probability of getting at most I head is:
Which of the following is NOT a type of data classification?
If the occurrence of events follows Poisson Process with mean rate λ, then inter-occurrence time of events will follow:
A random sample of 100 ball bearings selected from a shipment of 2000 ball bearing has an average diameter of 0.354 inches with standard deviation 0.048 in...
For a group of 100 students, the mean and standard deviation of scores were found to be 30 and 5 respectively. Later on it was discovered that the scores 3...

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