SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question

MA 116 - Chapter 2 Review Name___________________________________ SHORT ANSWER. Write the word or phrase that best completes each statement or answe...
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MA 116 - Chapter 2 Review

Name___________________________________

SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. For the given data, identify the variable under consideration. 1) Hannah finished the 200-meter race in 22.4 seconds.

2) Jorge finished in 10th place in the 1000-meter race.

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. 3) A relative frequency histogram for the sale prices of homes sold in one city during 1996 is shown below.

Classify the data as either discrete or continuous. 4) The number of freshmen entering college in a certain year is 621.

5) The average height of all freshmen entering college in a certain year is 68.4 inches.

Construct a stem-and-leaf diagram for the given data. 6) The following data show the number of laps run by each participant in a marathon. 46 65 55 43 51 48 57 30 43 49 32 56 Identify each of the following variables as either qualitative or quantitative. 7) The number of people on a jury. 8) The verdict of a jury.

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Construct a frequency distribution for the given qualitative data. 9) 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

Construct a pie chart representing the given data set. 10) The following data give the distribution of the types of houses in a town containing 13,000 houses. House Type Frequency Relative Frequency Cape 3250 0.25 Garrison 5200 0.35 Split 4550 0.40

Construct a stem-and-leaf diagram for the given data using two or five lines per stem as specified. 11) 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 77 100 108

102 106 85 85

73 84 89 87

90 102 101 83 87 83 92 97

105 92 90 83

Construct a stem-and-leaf diagram using two lines per stem. 2

Construct the dot plot 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

Construct the requested graph. 13) The table lists the winners of the Wimbledon women's singles title for the years 1976-1995. Construct a bar graph for the given relative frequencies. Winner

Frequency

C. Evert V. Wade M. Navratilova C. Martinez S. Graf E. Goolagong

2 1 9 1 6 1

Relative frequency 0.10 0.05 0.45 0.05 0.30 0.05

Construct the requested grouped-data table. Use classes based on a single value. 14) A car insurance company conducted a survey to find out how many car accidents people had been involved in. They selected a sample of 32 adults between the ages of 30 and 70 and asked each person how many accidents they had been involved in in the past ten years. The following data were obtained. 0 1 2 1

1 1 0 3

0 1 0 0

3 0 1 0

2 2 0 1

1 0 2 0

0 4 1 5

2 1 3 4

Construct a grouped-data table for the number of car accidents. Provide the requested table entry. 15) The data in the following table reflect the amount of time 40 students in a section of Statistics 101 spend on homework each day. Determine the value that should be entered in the Relative Frequency column for the class 30-44. Homework Time Number of Relative (minutes) Students Frequency 0-14 2 15-29 4 30-44 10 45-59 16 60-74 6 75-89 2

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16) The data in the following table reflect the amount of time 40 students in a section of Statistics 101 spend on homework each day. Find the value of the missing entry. Homework Time Relative (minutes) Frequency 0-14 0.05 15-29 0.10 30-44 0.25 45-59 60-74 0.15 75-89 0.05 Construct a grouped-data table for the given data. Use the symbol -< to mean "up to, but not including". 17) Kevin asked some of his friends how many hours they had worked during the previous week at their after-school jobs. The results are shown below. 5 6 5 4 5 5 9 8 5 3 8 6 6 8 5 6 8 5 6 8 6 8 8 4 Construct a frequency table. Use 4 classes, a class width of 2 hours, and a lower limit of 3 for class 1. Hours Frequency

18) A medical research team studied the ages of patients who had strokes caused by stress. The ages of 34 patients who suffered stress strokes were as follows. 29 30 36 41 45 50 57 61 28 50 36 58 60 38 36 47 40 32 58 46 61 40 55 32 61 56 45 46 62 36 38 40 50 27 Construct a frequency table for these ages. Use 8 classes beginning with a lower class limit of 25. Age

Frequency

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Construct a grouped-data table for the given data. Use the alternate method for depicting classes. Using this method, the range of values that go into a given class includes both cutpoints. So the class 30-39, for example, would contain values from 30 up to and including 39. 19) A medical research team studied the ages of patients who had strokes caused by stress. The ages of 34 patients who suffered stress strokes were as follows. 29 30 36 41 45 50 57 61 28 50 36 58 60 38 36 47 40 32 58 46 61 40 55 32 61 56 45 46 62 36 38 40 50 27 Construct a frequency table for these ages. Use 8 classes beginning with a lower class limit of 25. Age

Frequency

Construct the specified histogram. 20) The frequency table below shows the number of days off in a given year for 30 police detectives. Days off Frequency 0-

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