Fuel economy cylinders, describe what these black plots. Tell you about the relationships between the number of cylinders a car engine has the cars fuel economy
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Fuel economy cylinders, describe what these black plots. Tell you about the relationships between the number of cylinders a car engine has the cars fuel economy
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- Exam Scores The table shows the mathematics entrance test scores x and the final examination scores y in an algebra course for a sample of 10 students. (a) Sketch a scatter plot of the data. (b) Find the entrance test score of any student with a final exam score in the 80s. (c) Does a higher entrance test score imply a higher final exam score? Explain.Sports The ordered pairs below give the winning times (in seconds) of the women’s 100-meter freestyle in the Olympics from 1984 through 2012. 1984,55.92 2000,53.83 1988,54.93 2004,53.84 1992,54.64 2008,53.12 1996,54.50 2012,53.00 (a) Sketch a scatter plot of the data. Let y represent the winning time (in seconds) and let t=84 represent 1984. (b) Sketch the line that you think best approximates the data and find an equation of the line. (c) Use the regression feature of a graphing utility to find the equation of the least squares regression line that fits the data. (d) Compare the linear model you found in part (b) with the linear model you found in part (c).Measurement Use the fact that 13 inches is approximately the same length as 33 centimeters to find a mathematical model that relates centimeters y to inches x. Then use the model to find the numbers of centimeters in 10 inches and 20 inches.
- Forest Fires and Acres Burned An environmentalist wants to determine the relationships between the numbers (in thousands) of forest fires over the year and the number (in hundred thousands) of acres burned. The data for 6 recent years are shown. Number of fires x 58 47 84 62 57 45 Number of acres burned y 19 26 51 15 30 15 Send data to Excel Part 1 of 5 Your Answer is correct (a) Draw the scatter plot for the variables. Fires and Acres Burned Acres burned 100,000s y 5 10 15 20 25 30 35 40 45 50 55 60 65 70 x 10 20 30 40 50 60 70 80 90 0 Fires 1000s Part: 1 / 5 1 of 5 Parts Complete Part 2 of 5 (b) Compute the value of the correlation coefficient. Round your answer to at least three decimal places. r=?Forest Fires and Acres Burned An environmentalist wants to determine the relationships between the numbers (in thousands) of forest fires over the year and the number (in hundred thousands) of acres burned. The data for 6 recent years are shown. Number of fires x 72 69 58 47 84 62 Number of acres burned y 62 42 19 26 51 15 Send data to Excel Part: 0 / 5 Part 1 of 5 (a) Draw the scatter plot for the variables. Fires and Acres BurnedA researcher wants to represent the difference in the prevalence of infant mortality rates among a population based on race. Which graphic would be most useful in depicting the researcher’s data? Group of answer choices A bar chart Histogram Pie chart A stem and leaf plot
- Plzzz explain. TyForest Fires and Acres Burned An environmentalist wants to determine the relationships between the numbers (in thousands) of forest fires over the year and the number (in hundred thousands) of acres burned. The data for 7 recent years are shown. Number of fires x 57 45 72 69 58 47 84 19 26 51 Number of acres burned y 30 15 62 42 Send data to Excel Part: 0/5 Part 1 of 5 (a) Draw the scatter plot for the variables. umed (100,000) Fires and Acres Burned 8 B FA 3what is the interquartile range?
- 5 average that makes scarves has many different styles and colors that people can order. The company keeps track of the number of each style, color combination they make, and the A company sale price for the scarves having that combination. They create a scatter plot using the data with the number of scarves along the x-axis and the average price per scarf, in dollars, along the y-axis. average sale price per scarf in dollars N 14 m 100 200 300 400 500 600 700 800 900 number of scarves made The data in the graph suggest a linear association. Which of the functions best represents the equation of the line of best fit? Select the correct choice. A) y=-225x + 1,124 By = -0.004x + 5 c) y=-x+ 5 ے y = 0.01x+5please solve the following questions. i need them plsCholesterol Levels The cholesterol levels for 10 adults are shown below.Draw a box-and-whiskers plot of the data. Cholesterol Levels310 185 254 221 170214 172 208 164 182