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...