0% 0 Statistics Quiz 13 1 / 50 if Var(??)?0 as n ? 0, then ?? is said to be______________? Efficient Consistent Sufficient Unbiased 2 / 50 For a population with any distribution, the form of the sampling distribution of the sample mean is_____________? Always normal for all sample sizes Always normal for large sample sizes Sometimes normal for all sample sizes Sometimes normal for large sample sizes 3 / 50 A sampling distribution is the probability distribution for which one of the following___________? A population parameter A sample statistic A population A sample 4 / 50 For a biased estimator ?? of ?, which one is correct_______________? MSE(??)=Var(??)+Bias2 MSE(??)=SD(??)+Bias MSE(??)=SD(??)+Bias2 MSE(??)=Var(??)+Bias 5 / 50 Any data collected by the investigator personally from the informants are called __________ data? Unofficial None of these Group data Primary 6 / 50 If variance iv standard deviation is minimum if the deviation taken from______________? Mean Average G.M. Mode 7 / 50 Statistics are ___________ expressed? Qualitatively Descriptive Quantitatively Ability 8 / 50 Regression co-efficient is denoted by_____________? byx bzx m by 9 / 50 The _____ order moments about mean are all zero? None Four Add Even 10 / 50 If third moment about mean is equal to zero, then distribution is ______________? Negatively skewed None of these positively skewed Symmetrical 11 / 50 The median of F,K,E, Q, U, E, N, C,Y, is ________? LEY EUP EUQ EFP 12 / 50 The process of dividing a heterogeneous_____________? Cluster Random Sampling Random digit Stratification 13 / 50 Comparing the times to failure of radar transponders made by firms A, B, and C based on an airline?s sample experience with the three types of instruments one may use____________? Spearman Rank Correlation test Kruskal-Wallis test Wilcoxon Rank-Sum test Kolmogorov-Smirnor test 14 / 50 If mean and variance are not equal then distribution ________________? None Equal Skewed Symmetrical 15 / 50 In a Wilcoxon Rank-Sum test__________________? Ties always affect the decision Ties never affect the decision Ties between the two sample may affect the decision Ties within one sample may affect the decision 16 / 50 A subset of the sample space is called _________________? Sample point Set Event Space 17 / 50 Mean deviation is equal to 4/5 of the _________ manipulation? Quartile deviation Variance Standard deviation Range 18 / 50 The arithmetic mean _________ by 10 if 10 is added to all values? Smaller Largest Decease Increase 19 / 50 Statistics tests the law of ____________? Other sciences physics Business Literary subjects 20 / 50 In which approach to probability the outcomes are equally likely to occur ? Relative Frequency Subjective Probability Classical Probability Independent 21 / 50 Binomial distribution is symmetrical when:_________________? p = q p > q p > q np > npq 22 / 50 Deciles means are 1/( )? 1000 100 10 10000 23 / 50 The probability of success changes from trial to trial in:___________________? Sampling distribution Binomial distribution Hypergeometrical distribution Geometric distribution 24 / 50 For a given class 30-44 the midpoint will be ________________? 37 35 30 34 25 / 50 _________ used the word statistics for the first time during one of his lectures at a German university? unavoidable Achenwall Feet Fisher 26 / 50 Range is the difference between largest and ___________? Lowest Biggest Middlest Smallest 27 / 50 An Index number of an average quality of wheat in Lahore__________ Index? Quantity Index Number Volume Index Number Weighted Index Number value Index Number 28 / 50 The data which have already been collected by some one are called____________? Array data Raw data Fictitious data Secondary data 29 / 50 A Constant can assume _______ value? Four Resindent More than value One 30 / 50 Area of normal distribution total is equal to _______? Two Three Four One 31 / 50 The mean of a binomial distribution is always:____________________? None of these Equal to variance Greater than varince Less than variance 32 / 50 A chance variation in an observational process is_____________? Instrument error Random error Measurement error Dispersion/ Variability 33 / 50 For a population consisting of 4 members, a sample of size ?2? is taken replacement, then the number of all the possible samples are? 8 32 4 16 34 / 50 What is the mean of binomial distribution ____________? n(1 ? 1) X n x p ?fx/?f 35 / 50 The joint probability is _______________? Also called Prior probability The likelihood of two events happening given that another event has already ha The likelihood of two events happening together Based on two mutually exclusive events 36 / 50 In a binomial distribution the probability of ___________ changes from trial to trial? Success Out come Experiment Failure 37 / 50 For distribution Function F(X),F(-?)=0 and F(?)= ? 0 -1 1 Non of These 38 / 50 Which of the following is an assumption underlying the use of the t-distribution ? All above The sample are drawn from a normally distributed population. s (sample standard deviation) is an unbiased estimate of the population variance. The variance of the population is known 39 / 50 Base year quantities are used as weights in _______________? None of these Fisher?s index Laspeyre?s index Paasche?s index 40 / 50 The index numbers are used to measure seasonal and cyclical variations in __________? Commodities Realtives Time Series Whole sale 41 / 50 Total area under the normal curve is________? 0.01 0.5 1 100 42 / 50 1. Nos. is a ____ for measuring changes in a variable or a group of related variables? Device variable Cost Region of goods 43 / 50 Volume index in Marshall is _______________? ?qn(qo + qn)/?qn(po + pn) x100 ?pn(Po + Pn)/ ?pn (Po + Pn) ?qn(Po + Pn)/ ?qo (Po + Pn) x100 ?pn(qo + qn)/?pn 44 / 50 The variance of 5 numbers is 10. If each number is divided by 2, then variance of new number is_____________? 0 5 20 2.5 45 / 50 In the sampling without replacement a sampling unit can be selected_______________? Only Once Less than once More than once None of these 46 / 50 If any value in the data is zero, then which of the following average vanishes ______________? None of these Mode G.M. A.M. 47 / 50 In Statistics, a population consists of:_____________? None of the above All People living in the are under study All subjects or objects whose characteristics are being studied All People living in a country 48 / 50 If in a sampling distribution of X the sample size is 25, what assumption must hold for the sampling distribution of X to be normal ? Population distribution is uniform Population distribution is normal ?x = ?x /?n ?1 = ?x 49 / 50 A sample estimate is used to describe a characteristic of a_____________? Data Sample Population None 50 / 50 The mean deviation of the values, 18, 12, 15 is____________? 3 2 Zero 6 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 12 Statistics Quiz 14Next
