0% 0 Statistics Quiz 2 1 / 50 A?B means:_______________? The elements of A or B The elements A but not of B The elements of A and B None of these 2 / 50 E(x1 ? x2)= ___________________? 6?2 ? x2 u1 ? u2 ux ? x2 6x ? x2 3 / 50 The data collected by NADRA to issue National Identity cards are______________? un-official data Primary data Official data Secondary data 4 / 50 The sum of the deviations about the mean is always______________? Total Standard Deviation Zero Range Positive 5 / 50 If y= ax + b the S.? D. of y is _______________? Mean Deviation of x S.? D. of x Minimum Maximum 6 / 50 If any value in the data is negative, then it is impossible to calculate _______? H.M. Mode A.M. G.M. 7 / 50 Which of the following divides a group of data into four subgroups? Quartiles Median Deciles Percentiles 8 / 50 The algebraic sum of deviations from mean is_____________? Maximum Minimum Zero Undefined 9 / 50 The median of numbers, 12, 22, 32,__(2n + 1)2 is given by______? (N ? 1)2 (2n + 1)2 (n2 + 1) (n + 1)2 10 / 50 The height of a student is 60 inches. This is an example of________________? Qualitative data Continuous data Categorical data Discrete data 11 / 50 Statistics Laws are true________________? Facts Average Field In each case 12 / 50 __________ are said to be exhaustive if they constitute the entire sample space? Events Outcomes Objects Equally 13 / 50 When testing for randomness, we can use_____________? None of these Sign test Runs test D Mann-Whitney U test 14 / 50 If a card is chosen from a standard deck of cards, what is the probability of getting a diamond (?) or a club (?)? 13/52 19329 20/52 26/52=1/2 15 / 50 In normal distribution Q.? D. ( quartile deviation)is equal to________? 0.6745 ? None of these 0.7979 ? ? 16 / 50 A graph of cumulative frequency distribution is called ________________? Histrogram Frequency Polgon None of above Ogive 17 / 50 If x and y are Independent to each other the coefficient of correlation is _____________? -1 0.6 1 0 18 / 50 Which of the following is impossible in sampling ? To make voters lists Destructive tests Heterogeneous data None of these 19 / 50 In binomial distribution n=6 and p=0.9, then the value of______________? P(X=7) is One Zero Less than zero 20 / 50 The probability of getting exactly three tails when three balanced coins are tossed once _______________? 44204 44235 44385 44324 21 / 50 The median of the data 2, 4, 10, 8, 6 is _______________? 6 5 None of these 10 22 / 50 The average monthly production of a factory for the first 8 months is 2,500 units, and for the next 4 months the production was 1,200 units. The average monthly production of the year will be_____________? 5031.10 units 3012.11 units 2066.55 units 4021.12 units 23 / 50 Experiment in which outcomes vary from trial to trial _________________? Variable Random experiment Experiment Non of these 24 / 50 Most of the recent developments in statistics arose to meet the needs of ____________? Hands Three reasons Physics Biology 25 / 50 In case of symmetrical distribution? Mean=Mode=Median ?1=?4 ?1=?4 ?1=?2 26 / 50 Continuous variable can assume __________ value? Accuracy All possible Constant Specific 27 / 50 The smallest individuals which constitute the entire population are called __________________? Sampling units Sample pop Sampling frame Sample design 28 / 50 Binomial distribution has _______ parameter? 3 6 4 2 29 / 50 A constant variable can take values______________? Not fixed Zero Fixed Nothing 30 / 50 For making voters lists in Pakistan we need _______________? Census Systematic sampling Simple random sampling Quota sampling 31 / 50 If p= 0.1 and n = 400 then mean _______________? 20 60 40 30 32 / 50 _________ is an estimate expressed by a single value? Point estimate C.I. Point estimator Parameter 33 / 50 In which distribution successive trials are without replacement:____________________? Hypergeometric distribution Binomial distribution Geometric distribution Poisson distribution 34 / 50 Sum of dots when two dice are rolled is____________? a continuous variable a qualitative variable a constant a discrete variable 35 / 50 In a frequency distribution the last cumulative frequency is 500. Q3 must lie in_____________? 175th item 275th item 375th item 150th item 36 / 50 Variance remains unchanged by change of________________? Scale Both Origin None of these 37 / 50 If we reject the null hypothesis, we might be making____________? Type-Error Unpredictable Type-II Error A correct Decision 38 / 50 An events that contains the finite number point the sample space is called __________________? Continuous values Finite Random 39 / 50 For discrete random ?X?, the expectation of X i.e., E(x) is equal to:________________? ?x2P(x) ?P(x) One ?x.P(x) 40 / 50 Which one of the following measurement does not divide a set of observations into equal parts ? Quartiles Deciles Standard Deviations Percentiles 41 / 50 Lack of symmetry is called_______________? Non of these Skewness Absolute Dispersion Relative Dispersion 42 / 50 Lowest value of variance can be________________? 1 3 -1 0 43 / 50 Quartile deviation is not capable of manipulation______________? mathematically Easy Abjectly Algebraic 44 / 50 There are ____________ probability sampling? Three Six Four Seven 45 / 50 The Wilcoxon, Rank-Sum test used to compares_______________? Two populations Three populations Any number of populations A sample mean to the population mean 46 / 50 In normal distribution Q1=_________? u + .6745 (S.D.) u + .6745 (S.D.) u ? .6745 (S.D.) u ? .7979 (S.D.) 47 / 50 Use of Statistics in planning is ____________? Various Methods Unavoidable Useless Samples 48 / 50 A_______ is the specific value of the statistic used to estimate the population parameter? None of these C.I. Estimator Point estimator 49 / 50 P(? ? ??x?? + ?)=_________? 0.6745 0.2345 0.6743 0.6826 50 / 50 Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________? 2 0 4 8 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 1 Statistics Quiz 3Next
