统计学考试题目（Statistical examination questions）.docVIP

统计学考试题目（Statistical examination questions） The second chapter is the collection and arrangement of statistical data First, individual choice questions The difference between the 1. typical surveys and the sample surveys is that (A). A, investigation organization form, B, investigation method, C, method of selecting investigation unit, D and investigation object 2. histograms are generally used to represent (B). A, cumulative number of distribution, B, frequency distribution characteristics C, the functional relationship between variables, D, and the correlation between data 3. if the number of all flag values is doubled, and the flag value is constant, the arithmetic mean (C) is used. A, increase B, reduce C, constant D, cannot be determined 4., to understand the income and expenditure of Nanjing residents, the most suitable way of investigation is (C). A, general survey, B, key investigation, C, sampling survey, D and typical investigation The median value of the set is (D) 6., when comparing the degree of discretization between the two sets of data, the variance of the two can not be directly compared because of the two sets of data (D). A, standard deviation is different, B and variance are different C, the number of data is different, D, measurement unit is different 7., in the measurement of trends in data sets, the measure that is not affected by extreme values is (A). A, B, geometric mean mode C, harmonic mean, D, arithmetic mean 8., a company will be divided into old employees, middle, green, three categories, and then based on the analysis of each employee, from the three categories of employees A number of employees are selected as representatives to investigate their cultural expenditure and to calculate annual cultural activities of the whole company Approximate value of the sum of money, this is (A). A, typical surveys, B, and key investigations C, sampling survey, D and general survey 9., compare the similar indexes of different regions, departments an