TABLE OF CONTENTS INTRODUCTORY STATISTICS CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! !5 !9 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 13 21 30 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 40 45 49 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 54 61 68 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 76 80 84 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 104 109 115 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 135 139 143 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 147 150 153 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 156 164 172 CHAPTER 10 FORM A! CHAPTER 10 FORM B! CHAPTER 10 FORM C ! ! ! ! ! ! ! 199 206 214 CHAPTER 11 FORM A! CHAPTER 11 FORM B! CHAPTER 11 FORM C! ! ! ! ! ! ! 240 243 247 CHAPTER 12 FORM A! CHAPTER 12 FORM B! CHAPTER 12 FORM C ! ! ! ! ! ! ! 251 255 259 CHAPTER 13 FORM A! CHAPTER 13 FORM B! CHAPTER 13 FORM C ! ! ! ! ! ! ! 264 272 280 CHAPTER 14 FORM A! CHAPTER 14 FORM B! CHAPTER 14 FORM C ! ! ! ! ! ! ! 288 293 299 CHAPTER 15 FORM A! CHAPTER 15 FORM B! CHAPTER 15 FORM C ! ! ! ! ! ! ! 305 313 320 CHAPTER 16 FORM A! CHAPTER 16 FORM B! CHAPTER 16 FORM C ! ! ! ! ! ! ! 348 354 360 ELEMENTARY STATISTICS CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! !!1 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 13 21 30 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 40 45 49 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 288 293 299 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 88 93 98 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 120 125 130 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 135 139 143 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 147 150 153 CHAPTER FORM A ! CHAPTER FORM B! CHAPTER FORM C! ! ! ! ! ! ! 181 187 193 CHAPTER 10 FORM A! CHAPTER 10 FORM B! CHAPTER 10 FORM C ! ! ! ! ! ! ! 223 228 234 CHAPTER 11 FORM A! CHAPTER 11 FORM B! CHAPTER 11 FORM C! ! ! ! ! ! ! 251 255 259 CHAPTER 12 FORM A! CHAPTER 12 FORM B! CHAPTER 12 FORM C ! ! ! ! ! ! ! 264 272 280 CHAPTER 13 FORM A! CHAPTER 13 FORM B! CHAPTER 13 FORM C ! ! ! ! ! ! ! 366 369 372 CHAPTER 14 FORM A! CHAPTER 14 FORM B! CHAPTER 14 FORM C ! ! ! ! ! ! ! 328 334 341 Introductory Statistics (IS) / Elementary Statistics (ES): Chapter Form A Exam Name _ SHORT ANSWER Write the word or phrase that best completes each statement or answers the question Provide an appropriate response 1) The table below shows the number of new AIDS cases in the U.S in each of the years 1989-1994 Year 1989 1990 1991 1992 1993 1994 1) New AIDS cases 33,643 41,761 43,771 45,961 103,463 61,301 Classify the study as either descriptive or inferential Answer the question 2) A magazine publisher always mails out a questionnaire six months before a subscription ends This questionnaire asks its subscribers if they are going to renew their subscriptions On average, only 7% of the subscribers respond to the questionnaire Of the 7% who respond, an average of 47% say that they will renew their subscription This 7% who respond to the questionnaire are known as what? 2) Identify the study as an observational study or a designed experiment 3) An educational researcher used school records to determine that, in one school district, 84% of children living in two-parent homes graduated high school while 75% of children living in single-parent homes graduated high school 3) Provide an appropriate response 4) Why statisticians sometimes use inferential statistics to draw conclusions about a population? In what situations might a statistician draw conclusions about a population using descriptive statistics only? 4) Identify the study as an observational study or a designed experiment 5) A clinic gives a drug to a group of ten patients and a placebo to another group of ten patients to find out if the drug has an effect on the patients' illness 5) List all possible samples from the specified population 6) The six members of a board of directors are Sam (S), Laurie (L), Peggy (P), Jorges (J), Max (M), and Claude (C) Consider these board members to be a population of interest List the 15 possible samples (without replacement) of size four from this population of six board members 6) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley Provide an appropriate response 7) The finalists in an essay competition are Lisa (L), Melina (M), Ben (B), Danny (D), Eric (E), and Joan (J) Consider these finalists to be a population of interest The possible samples (without replacement) of size three that can be obtained from this population of six finalists are as follows 7) L,M,B L,M,D L,M,E L,M,J L,B,D L,B,E L,B,J L,D,E L,D,J L,E,J M,B,D M,B,E M,B,J M,D,E M,D,J M,E,J B,D,E B,D,J If a simple random sampling method is used to obtain a sample of three of the finalists, what are the chances of selecting Ben, Danny, and Joan? Use the random number table in Appendix A to obtain the required list of random numbers 8) A company employs 5382 people and wishes to interview a random sample of 14 of them with regard to the company's health insurance policy Construct a list of 14 random numbers between and 5382 that can be used in obtaining the required simple random sample Use the random number table and use as your starting point the digits 0691 in row 3, columns 30-33 8) Provide an appropriate response 9) A political researcher wishes to gauge political sentiment regarding a proposed tax cut He obtains a list of 1000 email addresses from an internet provider, uses a random number table to select a random sample of 100 of these addresses, emails the people in the sample and requests that they respond to his questions by email Do you think that the group of people who respond is likely to be representative of all registered voters? Explain your answer 9) 10) True or false? In simple random sampling, each possible sample is equally likely to be the one obtained 10) 11) From a group of 496 students, every 49th student starting with the 3rd student is selected Identify the type of sampling used in this example 11) 12) Describe the steps involved when using stratified random sampling with proportional allocation What are the advantages of this sampling method? 12) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley A designed experiment is described Identify the specified element of the experiment 13) In a clinical trial, 780 participants suffering from high blood pressure were randomly assigned to one of three groups Over a one-month period, the first group received a low dosage of an experimental drug, the second group received a high dosage of the drug, and the third group received a placebo The diastolic blood pressure of each participant was measured at the beginning and at the end of the period and the change in blood pressure was recorded Identify the response variable 13) 14) An education researcher was interested in examining the effect of the teaching method and the effect of the particular teacher on students' scores on a reading test In a study, there are four different teachers (Juliana, Felix, Sonia, and Helen) and three different teaching methods (method A, method B, and method C) The number of students participating in the study is 258 Students are randomly assigned to a teaching method and teacher Identify the experimental units (subjects) 14) Provide an appropriate response 15) In a designed experiment, explain the difference between the treatments and the factors 15) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley Answer Key Testname: ISES CHAPTER FORM A 1) 2) 3) 4) Descriptive The sample Observational study If a population is large, it may be too expensive and time-consuming to interview every member of the population In such cases, a sample is drawn from the population, and based on the information in the sample, conclusions are drawn about the population; in other words, inferential statistics are used If the population is relatively small, it may be realistic to interview every member of the population, in which case only descriptive statistics are needed 5) Designed experiment 6) S,L,P,J S,L,P,M S,L,P,C S,L,J,M S,L,J,C S,L,M,C S,P,J,M S,P,J,C S,P,M,C S,J,M,C L,P,J,M L,P,J,C L,P,M,C L,J,M,C P,J,M,C 7) 20 8) 691, 3863, 3034, 978, 4584, 99, 362, 245, 1788, 4947, 471, 1562, 684, 2598 9) No; explanations will vary Possible answer: the sample was obtained from among people who own a computer That group is likely to include relatively wealthy people who are more likely to favor a tax cut Furthermore, the group includes those who chose voluntarily to respond People who respond voluntarily are likely to have stronger opinions than the average voter 10) True 11) Systematic random sampling 12) Answers will vary Possible answer: The population is first divided into subpopulations (strata) From each stratum, a simple random sample is obtained whose size is proportional to the size of the stratum The advantage of this method is that it ensures that no stratum is missed 13) Change in diastolic blood pressure 14) The 258 students participating in the study 15) Answers will vary Possible answer: the factors are the variables whose effect on the response variable is of interest The treatments are the various experimental conditions In a single-factor experiment, the treatments are the levels of the factor In a multi-factor experiment, each treatment is a combination of levels of the factors Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley Introductory Statistics (IS) / Elementary Statistics (ES): Chapter Form B Exam Name _ SHORT ANSWER Write the word or phrase that best completes each statement or answers the question Provide an appropriate response 1) The table below shows the average income by age group for the residents of one town in the year 1998 The average incomes for each age group are estimates based on a sample of size 100 from each group Age group 18-24 25-39 40-54 55-70 Over 70 1) Average income $17,180 $26,661 $32,471 $25,960 $18,241 Classify the study as either descriptive or inferential Answer the question 2) The spell-checker in a desktop publishing application may not catch all misspellings (e.g their, there) or correctly interpret the spellings of proper names Jackie is an expert editor and can proofread extremely quickly Jackie is hired by a book publisher to check the spelling of every word in the latest proof of a history book With regard to Jackie's assignment, what is the population? 2) Identify the study as an observational study or a designed experiment 3) At one hospital in 1992, 674 women were diagnosed with breast cancer Five years later, 88% of the Caucasian women and 83% of the African American women were still alive 3) Provide an appropriate response 4) Fill in the following blanks: The two major types of statistics are statistics and _ statistics 4) List all possible samples from the specified population 5) Given a group of students: Allen (A), Brenda (B), Chad (C), Dorothy (D), and Eric (E), list all of the possible samples (without replacement) of size four that can be obtained from the group 5) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley Provide an appropriate response 6) The finalists in an essay competition are Lisa (L), Melina (M), Ben (B), Danny (D), Eric (E), and Joan (J) Consider these finalists to be a population of interest The possible samples (without replacement) of size two that can be obtained from this population of six finalists are as follows 6) L,M L,B L,D L,E L,J M,B M,D M,E M,J B,D B,E B,J D,E D,J E,J If a simple random sampling method is used to obtain a sample of two of the finalists, what are the chances of selecting Lisa and Danny? Use the random number table in Appendix A to obtain the required list of random numbers 7) A market researcher is conducting a telephone poll She has a list of 581 registered voters and wishes to interview a random sample of 12 of them Construct a list of 12 random numbers between and 581 that can be used in obtaining the required simple random sample Use the random number table and use as your starting point the digits 432 in row 13, columns 10-12 7) Provide an appropriate response 8) A political researcher wishes to gauge political sentiment regarding a proposed tax cut He obtains a list of 1000 email addresses from an internet provider, uses a random number table to select a random sample of 100 of these addresses, emails the people in the sample and requests that they respond to his questions by email Do you think that the group of people who respond is likely to be representative of all registered voters? Explain your answer 8) 9) A mega-discount chain store just opened a new clothing store in town emphasizing mainly women's clothing Before opening, management had to decide whether to only carry either men's, women's, boys', girls', or infants' clothing After performing representative sampling of potential customers from each of these groups, it was decided to carry only women's clothing Identify the type of sampling used in this example 9) 10) The residents of one town are classified by a social scientist as follows 10) Lower income: 1274 Middle income: 6279 Upper income: 1547 The scientist wishes to pick a sample of 200 of the residents for a study Describe a method for selecting the sample which involves stratified sampling with proportional allocation Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 12 Answer Key Testname: ISES CHAPTER FORM C 1) When calculating the mean age of the students in the sample, the researcher is using descriptive statistics When estimating the mean age of all students at the college, the researcher is using inferential statistics 2) The 10 cables chosen for testing 3) Observational study 4) A population is the complete collection of all individuals or items under consideration in a statistical study A sample is that part of the population from which information is obtained 5) P,V P,S P,T P,F V,S V,T V,F S,T S,F T,F 6) 15 7) 54, 2, 3, 41, 24, 19, 8, 30, 4, 6, 36, 15, 14, 40, 1, 5, 39, 42, 58, 10 8) Probability sampling consists of using a randomizing device such as tossing a coin or consulting a random number table to decide which members of the population will constitute the sample Probability sampling eliminates unintentional selection bias, permits the researcher to control the chance of obtaining a non-representative sample, and guarantees that the techniques of inferential statistics can be applied 9) Stratified sampling 10) Cluster sampling 11) Answers will vary Possible answer: Cluster sampling can save time when members of the population are widely scattered geographically The disadvantage is that members of a cluster may be more homogeneous than the members of the population as a whole and may not mirror the entire population 12) B 13) Whether or not (yes or no) the female frogs approached a male dummy 14) Answers will vary Possible answer: the factors are the variables whose effect on the response variable is of interest The treatments are the various experimental conditions In a single-factor experiment, the treatments are the levels of the factor In a multi-factor experiment, each treatment is a combination of levels of the factors 15) Treatments: diet pill and placebo Treatment group: the 2311 men who took the diet pill Control group: the 889 men who took the placebo Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 13 Introductory Statistics (IS) / Elementary Statistics (ES): Chapter Form A Exam Name _ SHORT ANSWER Write the word or phrase that best completes each statement or answers the question Classify the data as either qualitative or quantitative 1) The following table gives the top five movies at the box office this week Rank Last week N/A Movie title Pirate Adventure Secret Agent Files Epic Super Hero Team Reptile Ride Must Love Cats Studio Movie Giant G.M.G 21st Century Movie Giant Dreamboat 1) Box office sales ($ mi 35.2 19.5 14.3 10.1 9.9 What kind of data is provided by the information in the first column? Classify the data as either discrete or continuous 2) What type of data is provided by the statement "Helen finished in 8th place in the ice dancing competition"? 2) Identify the variable 3) A large record company reported the following sales figures for various music media last year Media CD CD single MP3 Vinyl Music video Mini Disc DVD Cassette 3) Sales ($ millions) 1477.3 1.8 65.9 2.6 531.4 0.3 108.2 3.4 Identify the variable under consideration in the second column? Tell whether the statement is true or false 4) A variable whose possible values are 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, 1.50, 1.55, 1.60, is a continuous variable 4) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 14 Construct a frequency distribution for the given qualitative data 5) The blood types for 40 people who agreed to participate in a medical study were as follows O A A O A O B A A A O O O B A O O O A A AB O O B O O O O B AB B O A A O A 5) O A O AB Construct a frequency distribution for the data Provide an appropriate response 6) The preschool children at Elmwood Elementary School were asked to name their favorite color The results are listed below Construct a frequency distribution and a relative frequency distribution blue purple purple red blue purple red purple red blue green green green purple green purple 6) purple red green yellow Construct a pie chart representing the given data set 7) The data below represent the results of a poll in which the the following question was asked: "To what degree are you satisfied with the outcome of the 2006 mayoral election?" Very Somewhat Not at All No opinion 7) 17% 22% 39% 22% Construct the requested graph 8) Construct a bar graph for the relative frequencies given Blood type O A B AB Frequency Relative frequency 22 19 0.44 0.38 0.12 0.06 8) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 15 Provide an appropriate response 9) Suppose you are comparing frequency data for two different groups, 25 managers and 150 blue collar workers Why would a relative frequency distribution be better than a frequency distribution? 9) Use single-value grouping to organize these data into a frequency distribution 10) The following data represent the total number of years of formal education for 40 employees of a bank 13 16 14 12 17 18 15 17 13 13 13 17 14 11 15 16 12 19 17 16 17 19 18 17 19 12 17 15 13 14 14 13 15 13 13 13 10) 13 13 17 14 Construct a frequency distribution for the number of years of education Provide the requested table entry 11) The data in the following table represent heights of students at a highschool Find the value of the missing entry 11) Height Relative (centimeters) frequency 142-under 152 0.03 152-under 162 0.21 162-under 172 0.27 172-under 182 0.28 182-under 192 192-under 202 0.02 Construct a dotplot for the given data 12) Attendance records at a school show the number of days each student was absent during the year The days absent for each student were as follows 934286340673422 12) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 16 A nurse measured the blood pressure of each person who visited her clinic Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 Use the histogram to answer the question The blood pressure readings were given to the nearest whole number 13) Approximately what percentage of the people aged 25-40 had a systolic blood pressure reading greater than or equal to 130? 13) Complete the contingency table and use it to solve the problem 14) The partially filled contingency table gives the relative frequencies of the data on age (in years) and sex from the residents of a retirement home Age (yrs) 60-69 70-79 Over 79 Total Male 0.17 0.1 0.13 Female 0.2 0.2 0.2 Total 14) What percentage of residents are females in the age group 70-79? Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 17 Provide the requested response 15) The table contains data from a study of daily study time for 40 students from Statistics 101 Construct an ogive from the data 15) Minutes on Number of Relative Cumulative homework students frequency relative frequency 0-under 15 0.05 0.05 15-under 30 0.10 0.15 30-under 45 0.20 0.35 45-under 60 18 0.45 0.80 60-under 75 0.10 0.90 75-under 90 0.10 1.00 Provide an appropriate response 16) When organizing data into tables, what is the disadvantage of having too many classes? What is the disadvantage of having too few classes? 16) A graphical display of a data set is given Identify the overall shape of the distribution as (roughly) bell-shaped, triangular, uniform, reverse J-shaped, J-shaped, right skewed, left skewed, bimodal, or multimodal 17) A frequency histogram is given below for the weights of a sample of college students 17) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 18 A graphical display of a data set is given State whether the distribution is (roughly) symmetric, right skewed, or left skewed 18) A stem-and-leaf diagram is given below for the number of vacation days taken in 2006 by the employees of an electronics company 18) 401363584368002 14251403010 02034 01 Provide an appropriate response 19) The bar graph below shows the number of car accidents occurring in one city in each of the years 2001 through 2006 The number of accidents dropped in 2003 after a new speed limit was imposed Why is the graph misleading? How would you redesign the graph to be less misleading? 19) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 19 Answer Key Testname: ISES CHAPTER FORM A 1) 2) 3) 4) 5) Quantitative Discrete sales False Blood type O A B AB Frequency 19 13 6) Color Frequency Relative Frequency blue 0.15 red 0.20 green 0.25 purple 0.35 yellow 0.05 7) 8) 9) Answers will vary Possible answer: Since the two groups are of different sizes, comparing the number (frequency) of managers falling into a given class with the number of employees falling in the same class would not be very meaningful It would be more useful to compare the proportion (relative frequency) of managers falling into a given class with the proportion of employees falling in the same class Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 20 Answer Key Testname: ISES CHAPTER FORM A 10) Number of years of education Frequency 11 12 13 11 14 15 16 17 18 19 11) 0.19 12) 13) 26% 14) 20% 15) 16) Answers will vary Possible answer: With too many classes it may be difficult to get a clear picture of the data and to see trends in the data - the amount of information may be overwhelming With too few classes, it may also be difficult to see important characteristics in the data as the data may have been over-summarized and too much information may have been lost 17) Bimodal 18) Right skewed 19) Answers will vary Possible answer: The graph is misleading because it is truncated The scale on the vertical axis should start at zero so that the bars will be in the correct proportions A part of the vertical axis could be omitted but the symbol // should then be used to warn the reader of the modified axis Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 21 Introductory Statistics (IS) / Elementary Statistics (ES): Chapter Form B Exam Name _ SHORT ANSWER Write the word or phrase that best completes each statement or answers the question Classify the data as either qualitative or quantitative 1) The following table gives the top five movies at the box office this week Rank Last week N/A Movie title Pirate Adventure Secret Agent Files Epic Super Hero Team Reptile Ride Must Love Cats Studio Movie Giant G.M.G 21st Century Movie Giant Dreamboat 1) Box office sales ($ mi 35.2 19.5 14.3 10.1 9.9 What kind of data is provided by the information in the second column? Classify the data as either discrete or continuous 2) The average height of all freshmen entering college in a certain year is 68.4 inches 2) Identify the variable 3) The following table gives the top five movies at the box office this week Rank Last week N/A Movie title Pirate Adventure Secret Agent Files Epic Super Hero Team Reptile Ride Must Love Cats Studio Movie Giant G.M.G 21st Century Movie Giant Dreamboat 3) Box office sales ($ mi 35.2 19.5 14.3 10.1 9.9 Identify the variable under consideration in the fourth column? Tell whether the statement is true or false 4) Arranging the age of students in a class in from youngest to oldest yields ordinal data 4) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 22 Construct a frequency distribution for the given qualitative data 5) The table shows the country represented by the winner of the 10,000 meter run in the Summer Olympic Games in various years Year Country 1912 1920 1924 1928 1932 1936 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 Finland Finland Finland Finland Poland Finland Czechoslovakia Czechoslovakia USSR USSR United States Kenya Finland Finland Ethiopia Italy Morocco Morocco 5) Provide an appropriate response 6) Scott Tarnowski owns a pet grooming shop His prices for grooming dogs are based on the size of the dog His records from last year are summarized below Construct a relative frequency distribution Class Large Medium Small 6) Frequency 345 830 645 Construct a pie chart representing the given data set 7) The following data give the distribution of the types of houses in a town containing 26,000 houses 7) House Type Frequency Relative Frequency Cape 6500 0.25 Garrison 10,400 0.35 Split 9100 0.40 Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 23 Construct the requested graph 8) The table lists the winners of the State Tennis Tournament women's singles title for the years 1986-2005 Construct a bar graph for the given relative frequencies Winner Frequency C Evert V Wade M Navratilova C Martinez S Graf E Goolagong 8) Relative frequency 0.10 0.05 0.45 0.05 0.30 0.05 Provide an appropriate response 9) Explain the difference between a frequency distribution and a relative frequency distribution Comment on the differences on the vertical axis scale Given the same data set and the same classes, will the shapes of the frequency distribution and the relative frequency distribution be the same? You may draw a diagram to support your answer 9) Given the following "data scenario," decide which type of grouping (single -value, limit, or cutpoint) is probably the best 10) Number of Pets: The number of pets per family 10) Use single-value grouping to organize these data into a frequency distribution 11) A teacher asked each of her students how many novels they had read in the previous six months The results are shown below 7 2 4 2 1 11) 2 Construct a frequency distribution for the number of novels read Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 24 Use limit grouping to organize these data into a frequency distribution 12) On a math test, the scores of 24 students were 12) 97 76 73 62 73 73 97 81 73 65 84 76 76 84 73 76 84 73 76 81 76 84 81 62 Construct a frequency distribution Use classes beginning with a lower class limit of 60 Score Frequency Construct the requested histogram 13) The table gives the frequency distribution for the data involving the number of television sets per household for a sample of 100 U.S households 13) # of TVs Frequency 20 50 15 10 5 Construct a relative frequency histogram 0.6 0.5 0.4 0.3 0.2 0.1 Construct a stem-and-leaf diagram for the given data 14) The diastolic blood pressures for a sample of patients at a clinic were as follows The measurements are in mmHg 78 94 79 88 87 85 81 95 91 81 96 78 85 95 88 74 97 102 77 106 100 85 105 85 73 84 89 87 90 111 101 92 14) 110 105 83 92 83 120 114 83 Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 25 Complete the contingency table and use it to solve the problem 15) The partially filled contingency table gives the frequencies of the data on 15) age (in years) and sex from the residents of a retirement home Age (yrs) 60-69 70-79 Over 79 To Male 17 11 Female Total What is the relative frequency for males in the age group 60-69? Provide an appropriate response 16) Raul set up a frequency distribution with the following classes: Weight (lb) 16) Frequency 20-under 25 25-under 30 30-under 35 Give an alternate way of depicting these classes if the original data are given: a To the nearest whole number b To one decimal place c To two decimal places A graphical display of a data set is given State whether the distribution is (roughly) symmetric, right skewed, or left skewed 17) A relative frequency histogram for the heights of a sample of adult women is shown below 17) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 26 MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question A graphical display of a data set is given Identify the overall shape of the distribution as (roughly) bell-shaped, triangular, uniform, reverse J-shaped, J-shaped, right skewed, left skewed, bimodal, or multimodal 18) 18) The dotplot shows heights of wrestlers A) J-shaped B) Right skewed C) Left skewed D) Reverse J-shaped SHORT ANSWER Write the word or phrase that best completes each statement or answers the question Provide an appropriate response 19) A population has a J-shaped distribution Two different samples of size 12 are picked from the population Two different samples of size 1000 are then picked from the population Do you think that the distribution of the two samples of size 12 will have roughly the same shape? Do you think that the distribution of the two samples of size 1000 will have roughly the same shape? Explain your thinking 19) 20) Explain in your own words why a truncated bar graph can be misleading 20) Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley ... B! CHAPTER 14 FORM C ! ! ! ! ! ! ! 328 334 341 Introductory Statistics (IS) / Elementary Statistics (ES): Chapter Form A Exam Name _... factors Copyright © 2012 Pearson Education, Inc Publishing as Addison-Wesley 5 Introductory Statistics (IS) / Elementary Statistics (ES): Chapter Form B Exam Name _... appropriate response 4) Fill in the following blanks: The two major types of statistics are statistics and _ statistics 4) List all possible samples from the specified population 5)