Construct a stem-and-leaf plot. Choose the correct answer below. D B A C. 0 79

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1 1. The data to the right represent the number of grams of fat in breakfast meals offered at a certain restaurant. onstruct a stem-and-leaf plot and describe the shape of the distribution onstruct a stem-and-leaf plot. hoose the correct answer below D Describe the shape of the distribution. hoose the correct answer below. kewed left kewed right Uniform Bell-shaped Answers Bell-shaped

2 2. An airline offers discounted flights from Atlanta to five American cities. Below is a frequency distribution of the number of tickets purchased for each location based on a random sample of purchased tickets. omplete parts (a) through (f). (a) onstruct a relative frequency distribution of the data. Response as Vegas Relative Response as Vegas Orlando New York hicago an Diego Orlando New York hicago an Diego (Round to three decimal places as needed.) (b) What proportion of the tickets were for New York? (Round to three decimal places as needed.) (c) onstruct a frequency bar graph. hoose the correct answer below O N O N O N (d) onstruct a relative frequency bar graph. hoose the correct answer below. Relative Freq. Relative Freq. Relative Freq O N O N O N (e) onstruct a pie chart. hoose the correct answer below.

3 O N O N D. O N O N (f) A local news broadcast reported that 7.1% of tickets purchased from the airline are for flights to an Diego. What is wrong with this statement? There is nothing wrong with the statement. The percentage is incorrect. No level of confidence is provided along with the estimate. Answers O N Relative Freq..4.2 O N O N No level of confidence is provided along with the estimate.

4 . A library took a survey to find the age distribution of 5 randomly selected new youth members. The results are shown in the table below. Age Group Number of New Members (a) onstruct a relative frequency distribution of the data. Age Group Relative (b) What percentage of new youth members are in the -5 age group? % (c) What percentage of the new youth members are age 8 or younger? % Answers

5 4. The following data represent the number of male and female murder victims by age in a recent year. Use the data to complete parts a-d. Age Number of Males Number of Females ess than or older (a) onstruct a relative frequency distribution for males. Express each relative frequency as a decimal. Age Number of Males Relative ess than (Round to three decimal places as needed.) or older 78 (b) onstruct a relative frequency distribution for females. Express each relative frequency as a decimal. Age Number of Females Relative ess than (Round to three decimal places as needed.) or older 45 (c) onstruct a side-by-side relative frequency bar graph. In the bar graphs below, the blue (left-side) bars represent males and the orange (right-side) bars represent females. hoose the correct graph below Murder Victims Murder Victims (d) ompare each gender's age percentages. hoose the correct answer below. The percentages of male murder victims for each age group are much higher than the percentages of female murder victims for the same age group. The percentages of male murder victims for each age group are much lower than the percentages of female murder victims for the same age group. The percentages of male murder victims for each age group are fairly close to the percentages of female murder victims for the same age group, but neither male nor female percentages are always higher than the other.

6 Answers Murder Victims The percentages of male murder victims for each age group are fairly close to the percentages of female murder victims for the same age group, but neither male nor female percentages are always higher than the other. 5. The following data represent the number of people in a particular state aged 15 to 9 with a high school education. Age Number (thousands) (a) What is the number of classes? (b) What are the class limits for the first class? ower lass imit = Upper lass imit = (c) What is the class width? Answers

7 . According to a language association, the number of college students studying a foreign language is increasing. The following data represent the foreign language being studied based on a simple random sample of students learning a foreign language. omplete parts (a) through (e). 1 lick the icon to view the table of students. (a) onstruct a frequency distribution. anguage hinese French German Italian Japanese atin Russian panish (b) onstruct a relative frequency distribution. (Round to three decimal places as needed.) anguage hinese French German Italian Japanese atin Russian panish Relative (c) Draw a frequency bar graph. hoose the correct answer below F G I J R F G I J R F G I J R (d) Draw a relative frequency bar graph.

8 hoose the correct answer below. Relative Freq F G I J R Relative Freq F G I J R Relative Freq F G I J R (e) Draw a pie chart. hoose the correct answer below. F G I J R F G I J R D. F G I J R F G I J R 1: Table of anguages panish hinese panish panish panish hinese German panish panish atin panish panish Russian French panish German German panish French panish Italian Japanese hinese panish Russian panish panish atin atin French

9 Answers F G I J R Relative Freq F G I J R F G I J R

10 7. Determine the original set of data egend: 1 represents 1 The original set of data is. (Use a comma to separate answers as needed. Use ascending order.) Answer: 1, 11, 17, 21, 24, 24, 27, 29,, 5, 5, 5, 7, 8, 4, 41

11 8. The following data represent the number of potholes on 5 randomly selected 1-mile stretches of highway around a particular city. omplete parts (a) through (g) below. Number of (a) onstruct a frequency distribution of the data (b) onstruct a relative frequency distribution of the data. Relative (Round to two decimal places as needed.) (c) Using the results from part (b), what percentage of the stretches of highway have potholes? % (Round to the nearest integer as needed.) (d) Using the results from part (b), what percentage of the stretches of highway have 5 or more potholes? % (Round to the nearest integer as needed.) (e) onstruct a frequency histogram of the data. hoose the correct answer below Number of N b f P th l 9 D Number of N b f P th l

12 Number of Number of (f) onstruct a relative frequency histogram of the data. hoose the correct answer below. Relative Relative Number of Number of Relative Relative Number of D Number of (g) Describe the shape of the distribution. hoose the correct answer below. Uniform kewed left Bell-shaped kewed right

13 Answers D. Relative Number of Number of kewed right

14 9. The following relative frequency histogram represents the proportion of people aged 25 to 4 years old not covered by any health insurance in 2. (a) Describe how this graph is misleading. What might a reader conclude from the graph? (b) Redraw the histogram so that it is not misleading Age (a) How is the graph misleading? hoose the correct answer below. The vertical scaling is incorrect. The largest value should be.25, not.. The horizontal scaling is incorrect. The smallest value should be, not 25. The horizontal scaling is incorrect. There should not be a gap between and 25. D. The vertical scaling is incorrect. The smallest value should be, not.1. What might a reader conclude from the graph? hoose the correct answer below. That it is not possible for people under the age of 25 to have health insurance. That the proportion of people not covered by health insurance decreases substantially as people get older. That the minimum proportion of people not covered by health insurance is.1. D. That it is not possible for people over the age of 5 to have health insurance. (b) hoose the histogram below that most accurately represents the data Answers D. The vertical scaling is incorrect. The smallest value should be, not.1. That the proportion of people not covered by health insurance decreases substantially as people get older

15 1. The pie chart below depicts the beverage size customers choose while at a fast food restaurant. omplete parts (a) through (c). Most popular beverage sizes at a restaurant arge 2% X 1% mall 44% Medium 11% (a) What is the most popular size? What percentage of customers choose this size? Medium; 11% arge; 2% X; 1% D. mall; 44% (b) What is the least popular size? What percentage of customers choose this size? Medium; 11% X; 1% arge; 2% D. mall; 44% (c) What percent of customers choose a large-sized beverage? 1% 2% 19% D. 1% Answers D. mall; 44% Medium; 11% 2%