0% 0 Statistics Quiz 9 1 / 50 The number of accidents in a city during 2012 is____________? Qualitative variable Discrete variable Constant Continuous variable 2 / 50 Normal Distribution ? Uni Modal Bi Modal Multi Modal have no Mode 3 / 50 The frequency distribution mean > Median > Mode is called __________? Negatively One Symmetrical #NAME? 4 / 50 The Harmonic Mean of any two numbers is________________? 2aba+b a+b2 a+b ab??? 5 / 50 Binomial distribution is symmetrical when P=_________________? 1/q 2q 1 q 6 / 50 Correlation coefficient lies between__________________? 1 ? r ? 0 0 ? r ? 1 0 ? r ? -1 -1 ? r ? 1 7 / 50 In binomial distribution the probability of success remains __________ from trial to trial? Constant Probability Four Varies 8 / 50 Volume Index in Marshall is ____________? Non of these ?Pn(Po + Pn)/?Pn(Po + Pn) ?Pn(Po + Pn)/?Pn(Po + Pn) x100 ?Pn(qo + qn)/?Pn 9 / 50 If y = bx + a the mean deviation of y is_____________? M.D.of x var (x) S.? D. of x S.? D. of y 10 / 50 In hypergeometric distribution, the trial are:_______________? Collectively Exhaustive Independent None Dependent 11 / 50 Price in proceeding year used in the method is called __________? Aggregation Method Volume Chain Method Fixed Method 12 / 50 The Runs test results in rejecting the null hypothesis of randomness when______________? None of these There is an unusually small number of runs Either of the above There is an unusually large number of runs 13 / 50 There are ____________ parameter in Binomial distribution? n, p, q n, q n, p q, p 14 / 50 The binomial distribution is symmetrical when:______________? Probability of success & probability of failure are equal P = 1/2 Both (b) & (c) but not (a) P > q 15 / 50 Data which have not been arranged in systematic order is called___________? Group data Raw data Tabular data Undefined data 16 / 50 Which of the following describe the middle part of a group of numbers ? Measure of Association Measure of Shape Measure of Variability Measure of Central Tendency 17 / 50 The graph obtained by joining the mid points of the tops of adjacent rectangles in histogram is called ______________? Histgram Ogive Pie chart Frequency polgon 18 / 50 Data arranging into rows and columns are called______________? Classification Tabulation Table Frequency distribution 19 / 50 Class _________ is the difference between two class limit? Class interval None of these Class mark Boundary 20 / 50 Data being used by an agency which is originally collected by them are _______ data? Secondary Quantitative Discrete Primary 21 / 50 Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________? 50 50/20 50-20 = 30 70 22 / 50 If x = 3 then value of regression co-efficient of X or Y is ________________? -3 0 -3 -4 23 / 50 Life of a T.V picture tube is a____________? Constant Continuous variable Qualitative variable Discrete variable 24 / 50 The first moment about means is always_________________? Negative Zero None of these 1 25 / 50 You asked five of your classmates about their height. On the basis of this information, you states the average height of all student in your university or college is 67 inches. This is an example of____________? Inferential Statistics Parameter Population Descriptive statistics 26 / 50 In a binomial distribution mean and variance is ________________? Variance ? mean None of these Variance > mean Mean < variance 27 / 50 A coin is so weighted that P (T) = 2P(H) then P(H) is _______________? 1 44198 44230 44199 28 / 50 If the conditional distribution of X1,X2,?..Xn given S=s, does not depends on ?, for any value of S=s the statistics S=s(X1,X2,?..Xn) is called______________? Consistent Efficient Sufficient Unbiased 29 / 50 The mathematical exception of x + y is equal to ________________? E(y) E(x + 0) E(x) + E(y) E(x + x) 30 / 50 If E(x) is the expected value of X then E[x ? E(x)]= ___________________? 0 E(X) ? 0 E(x) + E(x) E(x) ? E(x) 31 / 50 The median of normal distribution corresponds to the value of Z equal to_________________? 0 1 0.5 ? 32 / 50 if Var(T2)_______________? Consistent Unbiased Sufficient Efficient 33 / 50 A sample of 24 observations is taken from a population that has 150 elements. The sampling distribution of is___________? Approximately normal because is always approximately normally distributed Approximately normal because the sample size is large in comparsion to the population size Normal if the population is normally distributed Approximately normal because of the central limit theorem 34 / 50 when a three die rolled the sample space consists of _____________? 24 outcomes 6 outcomes 216 outcomes Non of these 35 / 50 A list of sample _________ is called sample space? Piont Events Subset Distinct 36 / 50 In a binomial distribution mean and variance is _________________? Variance ? mean Mean < variance None of these Variance > mean 37 / 50 Let X1,X2,?Xn be a random sample from the density f(x;(?), where ? may be vector. If the conditional distribution of X1,X2,?Xn given S=s does not depend on ? for any value of s of S, then statistic is called? Minimal sufficient statistic Minimax statistics Sufficient statistic Efficient 38 / 50 Census reports used as a source of data is____________? Primary source secondary source none Organized data 39 / 50 A source note foot are the _______________? Top Same Bottom Different 40 / 50 In a certain normal distribution having ? = 35 and variance = 16, then mode will be_______________? 16 4 None of these 3.5 41 / 50 A set of jointly sufficient statistic is defined to be minimal sufficient if and only if_______________? It is not a function of every other set of sufficient statistics. It is a function of any sufficient statistics in the set. It is a function of some other set of sufficient statistics. It is a function of every other set of sufficient 42 / 50 The variance of randomvariable of x then var(x) = E[x-E[x]2 = E[________]? E(x) (X ? A)2 (x ? u)2 (x ? 4)2 43 / 50 If bxy = -.8 by x = 1.2 then value of r is ________________? ?.96 ?-.96 None of these 0 44 / 50 Median is always central value even if the data is _______? Arranged Continuous Discrete Unassigned 45 / 50 If any value in the data is zero, then it is not possible to have _______? Mode Medain H.M. A.M. 46 / 50 The Normal Curve is asymptotic to the? Y-axis X-axis Along Y=X None 47 / 50 A simple aggregate price index_____________? Compares relative quantities Ignores relative quantities Compares relative quantities to relative prices Compares absolute prices to absolute quantities 48 / 50 Eyes color of employees is the example of____________? Attribute Continuous variable Constant variable Discrete variable 49 / 50 Relative measure of skewness was introduced by _____________? Karl Person Rowely Mode Lack 50 / 50 The experiment is repeated a _____________ number of times? Times Fixed Trial Expansion Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevStatistics Quiz 8 Statistics Quiz 10Next
