0% 1 Statistics Quiz 14 1 / 25 if in a binomial probability distribution mean and variance are 6 and 2.4 respectively, then the parameters of this distribution are:____________________? n = 50, p = 6/50 n = 10, p = 2/5 n = 10, p = 3/5 n = 10, p = 6/10 2 / 25 A discrete probability distribution may be represented by____________? A Table A mathematical Equation A Graph All of these 3 / 25 The probability of an event cannot be _____________? Negative None of these Positive Zero 4 / 25 The variance of a constant is_______________? Constant None a Zero 5 / 25 The sum of powers of deviation from mean is zero is called __________? Lack Skewed Normal Mean 6 / 25 The successive trials are with replacement in:________________? Hpergeometric distribution None of these Binomial distribution Geometric distribution 7 / 25 If P(A/B)=1/4 and P(A?B) =1/5 then P(B) is ________________? 44216 44291 0 44205 8 / 25 Normal distribution is the distribution of _______________? Qualitative variable Discrete r.v. Quantitative variable Continuous r.v. 9 / 25 The sum of square of deviation is least when measured from ____________? G.M. Mode Mean Arbitrary value 10 / 25 __________ is the process of using sample information to reach? Biased Unbiased Increase Population 11 / 25 In x = 2 _________ 6y the value of y are increasing by one unit then values of x are? No change Non of these Decreasing by 6 Increasing by 6 12 / 25 In binomial experiment, the experiment is repeated ______________? a large number times n; where n < 0 n = 100 n; fixed number of times 13 / 25 Which of these represent qualitative data______________? Height of a student Liking or disliking of (500) persons of a product Income of a government servant in a city Yield from a wheat plot 14 / 25 Parameter is a _________ quantity? Non of these Constant All of above Variable 15 / 25 The standard deviation is always _________ than mean deviation? Greater Less None Equal 16 / 25 In a binomial probability distribution it is impossible to find______________? P(X = 0) P(X > 0) p(0 ? X? n) P(X < 0) 17 / 25 In a symmetrical distribution mean, median and mode, _________________? Positive Greater Less than Coincide 18 / 25 First movement about mean is always equal to ___________? None of these 1 Zero S.D. 19 / 25 The Geometric Mean of -2, 4, 03, 6, 0 will be______________? -3 3 Cannot be Computed 0 20 / 25 If mean is 25 and standard deviation is 5 then C.V (Coefficient of variation) is_______________? 1 None of these 0.25 0.2 21 / 25 Selection of s by the students to solve a paper is _________________? Prob.Sampling Non-random sampling Sampling with replacement Random sampling 22 / 25 if you roll a pair of dice, what is the probability that (at least) one of the dice is a 4 or the sum of the dice is 7 ? 15/36 21/36 13241 13/36 23 / 25 Second moment about mean is always equal to _____________? Variance Square S.D. C.V. 24 / 25 Let X1,X2,??,Xn be a random sample from a density,,,, f(x ? ?) where ? is a value of the random variable ?with known density g?(?) Then the estimator ?(?) with?/ respect to the prior g?(?) is define as______________E[?(?)?X1,X2,?..,Xn] is called? Sufficient estimator Minimax estimator Posterior Bay?s estimator Bay?s estimator 25 / 25 Which of these is a relative measure of dispersion_____________? None of these Coefficient of Variation Standard Deviation Variance Provide Your Information Your score is The average score is 76% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevStatistics Quiz 13
