Exercises 3-1 1. Roller Coaster Speeds The data show the heights in feet of 14 roller coasters. Find the mean, median, midrange, and mode for the data. 95 105 50 125 102 120 160 102 118 91 160 95 50 84 Source: UltimateRollerCoaster.com. 2. Airport Parkin

The numbers of home runs that Barry Bonds hit in the first 18 years of his major league baseball career are listed below. Make a stem-and-leaf plot for this data. What is the shape of the data? 16 25 24 19 33 25 34 46 37 33 42 40 37 34 49 73 46 45

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E Use a stem-and-leaf plot that has two rows for each stem to display the data, which represent the income (in millions) of 30 of the highest paid athletes. Describe any patterns. 76 45 34 35 36 44 50 35 56 56 44 43 81 53 38 73 68 46 63 38 87 34 34 42 45 58 Determine the leaves in the stem-and-leaf plot below. Key: 313-33 Income ($ millions) 3 What best describes the data? 站 F2 R OA. Most of the incomes are less than 60 million dollars. OB. Most of the incomes are between 50 and 70 million dollars. OC. The incomes are evenly spread between 30 and 90 million dollars. OD. Most of the incomes are greater than 60 million dollars. V % 5 F4 T G B Y H N F5 46 53 U J 37 41 F6 ( 8 M K 9 F8 L P Alt Gr DELL F9 N F10 TE F11 1 T F12 - Intro Power Impant Sleep Pet Sis Insert Blog Despl Wake ONLOFF Supr Inicio

+ Automatic Zoom Weight (tons) 70 60 50 40 30 ROSA200 16, 17, 10 20 40 60 80 100 Length (feet) X4 Which statement accurately describes the information in the scatter plot? A. The information shows a positive correlation. The weight of a dinosaur tends to increase according to its length. B. The information shows a negative correlation. The weight of a dinosaur tends to decrease according to its length. C. The information shows no correlation. The weight and length vary according to the type of dinosaur. D. The information shows no correlation. The relationship between the weight and length of a dinosaur is uncertain. Book Page 182-183

A doctor wanted to determine whether there is a relation between a​ male's age and his HDL​ (so-called good) cholesterol. The doctor randomly selected 17 of his patients and determined their HDL cholesterol. The data obtained by the doctor is the in the data table below. Complete questions below.   LOADING... Click the icon to view the data obtained by the doctor. Age, x HDL​ Cholesterol, y ​Age, x HDL​ Cholesterol, y   37 57 38 46   42 52 64 63   45 33 28 55   34 54 49 37   53 35 26 46   50 40 50 38   60 42 47 56   59 38 40 30   24 46       PrintDone ​(a) Determine the​ least-squares regression equation from the sample data.   y=nothingx+nothing ​(Round to three decimal places as​ needed.)   ​(b​) Assuming the residuals are normally​ distributed, test whether a linear relation exists between age and HDL cholesterol levels at the α=0.01 level…