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tam CN 221 (Business Statistics) Practice Test Nom Chapters 1-4 MULTIPLE CIIOICE. Choose the one alternative that best completes the statement or answers the question. 1) A method of gathering data when people are asked a series of questions that can be administered 1) by e-mail, via the Web, face-to-face or over the telephone, is known as A) direct observation B) experiments © focus groups ames 2) The main drawback to using secondary data is that . 2) A) it may be expensive to obtain the data ie th ts of interest need to be directly observed to collect the data D) the subjects of interest are paid lo provide the data 3) A respondent of a survey indicates that he is a resident in the state of Ohio. This is an example of 3) data. A) ratio B) nominal ©) interval D) ordinal 4) A respondent of a survey indicates that he owns the home that he currently resides. This is an 4) example of data. A) interval B) ratio ©) nominal D) ordinal 5) data has the benefit of a true zero point. 5) B) Nominal C) Interval D) Ordinal 6) Your business statistics class had an exam last week. The average exam score for the class is an 6) example of A) secondary data, B) descriptive statistics. ©) qualitative data. D) inferential statistics. 7) Which of the following is an example of quantitative data? 7) A) your telephone number B) the zip code of your home address Cy gem gatee ‘RRadee nay 8) A telemarketer calls individuals at home over the phone and asks them the likelihood that they will 8) purchase a limeshare property over the next 12 months. This method of gathering data is known as Qaass B) expediinents ©) direct observation D) focus groups 9) Using income data to determine the credit worthiness of a consumer who wishes to purchase anew 9) car is an example of using slalistics in the field of A) markeling research 'B) finance C) advertising D) operations 10) A method of gathering data while the subjects of interest are in their natural environment, often unaware they are being watched, is known as A) experiments B) focus groups D) surveys 11) display the proportion of observations of each class relative to the total number of observations. A) Cumulative relative frequency distributions B) Histograms D) Frequency distributions 12) Movie ticket prices are are given for each year from 2006-2012. These data are A) lime series. B) cross section © qualitative D) categorical 13) are used to show the relationship between two variables. A) Venn diagrams Pein ©) Histograms D) Pie charts 14) Bins in Excel represent the A) number of classes in a frequency distribution. B) width of each class in a frequency distribution C) lower boundary of each class in a =e distribution. 15) The class is the breadth, or range, of numbers we plan to put into cach class of a frequency distribution using grouped quantitative data. ee B) number ©) frequency D) boundary 16) Porter Automotive is a car dealership that sells Buicks and Hondas. The following data shows the number of buyers this month according to the brand of car hey purchased as well as their age group. [Age Buick Honda Under 40 years old 6 17 40 years or older 19 8 The percentage of buyers who are under 40 old in this data is ars B) 54% ©) 50% D) 20% i) 10) 1) 12) 13) 14) 15) 16) 24) Thirty-five percent of customers al a restaurant order an alcoholic drink and an appetizer wilh dinner. Ten percent of customers do not order alcoholic drink or an appetizer with dinner. Sixty-five percent of diners order an appetizer with dinner. The percentage of customers who order an alcoholic drink but do not order an appetizer is A) 0.35 By) 0.12 (025 D) 0.30 25) Two six-sided die are rolled. Calculating the probability of the sum of the two die being a I is an example of using probability A) empirical ‘B) dassical © simple D) subjective 26) A textbook sales representative is responsible for 25 schools and needs to choose three of these schools to work with today. The number of different ways he can schedule a time to call these schools is : A) 3*25 + 3424 + 3423 = 216 B) 25*3! — 25*6 — 150 ©) 25*25'25 = 15,625 (1D) 252423 = 13,800 27) Which of the following is an example of qualitative data? A) the class aa of your last statistics exam © today's high temperature D) the amount of time that you studied for your last statistics exam 28) A respondent of a survey is asked whether their most recent dining experience was excellent, good, fair, or poor. The person indicates thal the experience was "good". This is an example of data. A) interval B) nominal ©) ordinal D) ratio 29) The Bureau of Labor Statistics provides monthly unemployment rates for each state and for the nation as a whole, The BLS has many ycurs of these historical rates available, The BLS unemployment data are A) qualitative B) lime series and cross section © time series only D) categorical 30) The is a graph that shows the distribution of the data. A) box and whisker B) trend ©) scatter plot 31) Consider the following stem and leaf display. 3111145 41467 5100456689 611336 Which of the following statements is correct? A) The data value that occurs most often is 50. C) There are a total of 10 data values in this data set. D) This largest data value is 59. 24) 25) 26) 27) 28) 29) 30) 31) 32) The following data represents the number of days that 10 homes were on the market before being 32) sold. 47 95 113 116 a7 72 51 12 109 20 What percentile is the home that was on the market for 47 days? A) 108 B) 15th © 3th b) 25th 33) Which one of the following statements is true for a right-skewed distribution? 33) (O hemain greater ban emediond B)Themeaniasonghiyequatioihemedion. () The mean is greater than the mode. LD) The mean is less than the median. 34) A random sample of computer users were asked which browser they primarily relied on for 34) surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results. Browser Desktop |Laptop Total Internet Explorer 18 56 74 Firefox 7 37 44 Chrome 24 77 101 Safari 3 18 21 Other 3 fb 10 total 55 195 250 The probability that a randomly selected person from this sample used the Safari browser or used a laptop computer is z A) (195+21)/250 — 0.864 B) 195/250 = .780 D) 18/195 = 0.092 35) 'The sample correlation is bounded below by . 35) BO 1 D) depends on the sample. 36) A(n) is a category in a frequency distribution. 36) A) polygon B) histogram © ogive ‘D) dass, 37) The following data represents the ages of a household that consists of five people. 37) 39 OFT 7 The mean is 20.4 and the variance is 262.8. The standard deivation is A) square rool of 262.8 = 16.2 ) 262.8 * 262.8 = 69064 C) 262.8/20.4 = 12.9 TD) 20.4/262.8 = .078 w Answer Key Testname: PRACTICE TEST CII 1-4 yD ayG 3)B 4c SA 6)B 7D BA 9) B 10) C Tic 12) A 13) B 14)D 15) A 16) A INA 18) D 19) A 20) D 21) B 22) Cc 23) C 24) C 25) B 26) D 27) B 28) C 29) B 30) D 31) B 32) D 33) A 34) C 35) A 36) D a7) A 38) C 39) D 40) A 41) FALSE 42) FALSE 43) TALSE 44) FALSE. 45) FALSE 46) FALSE 47) FALSE 48) TALSE 49) FALSF. 50) FAT.SF. 
