Homework Answers
19b) Though the scatter plot shows there is strong relationship between speed &mileage , because there is non-linear relationship between speed & mileage r=0 because r is measure of linear correlation between two variables only
20 a) The is strong linear relationship between grades & time
20b) thee is negative relationship,since there is downward trend
20c)strength of linear relationship is strong , since the trend is very clear with no outlier or influential point
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Part II 19. The gas mileage of an automobile first increases and then decreases as the...
please provide the correct answer 1. As the speed (in miles per hour) of an automobile...
please provide the correct answer
1. As the speed (in miles per hour) of an automobile increases, the gas mileage (in miles per gallon) first increases and then decreases. Suppose that this relationship is very regular, shown by the following data table and scatterplot. as Speed 30 40 50 60 70 Mileage 20 24 26 24 20 mileage 26 25 24 23 22 21 201 30 40 50 60 70 speed Why would we not want to compute a correlation...
Material: Rational Functions Between the speed of 50 miles/hour and 70 miles/hour, your gas mileage is a linear function...
Material: Rational Functions Between the speed of 50 miles/hour and 70 miles/hour, your gas mileage is a linear function of the speed at which you drive. Your car gets 40 miles/gal at a speed of 50 miles/hr and 30 miles/gal at a speed of 70 miles/hr. During a one-hour time period, your speed increases from 50 miles/hour to 70 miles/hour at a constant rate. How many gallons of gas does your car burn during this period? First, determine the number...
The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the sample...
The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the sample data to construct a scatterplot. Use the first variable for the x-axis. Based on the scatterplot, what do you conclude about a linear correlation? Weight (lb) Highway (mpg) 2880 33 3180 31 3375 29 3775 26 4265 24 2510 37 3265 30 Which scatterplot below shows the data? ОА. OB OC OD 40 40 d) 40 கு) Ap 20 2500 4500 WMO 2500 Weight...
How does the fuel consumption of a car change as its speed increases? Here are data...
How does the fuel consumption of a car change as its speed increases? Here are data for a 2014 Chevrolet Cruze Turbo Diesel. Speed is measured in miles per hour, and fuel consumption is measured in miles per gallon. Speed 10 20 30 40 50 60 70 80 Fuel 38.1 54.0 68.4 63.6 60.5 55.4 50.6 43.8 a. Make a scatterplot. (Which is the explanatory variable?) b.Describe the form of the relationship. It is not linear. Explain why the form...
A department of transportation's study on driving speed and miles per gallon for midsize automobiles resulted in t...
A department of transportation's study on driving speed and miles per gallon for midsize automobiles resulted in the following data Speed (Miles per our30 50 40 55 30 24 60 25 51 55 Miles per Gallon 28 24 24 23 30 32 21 35 26 25 Compute the sample correlation coefficient (to 2 decimals and enter negative value as negative number) What can you conclude, based on your computation of the sample correlation coefficient? - Select your answer- Select the...
The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the sample...
The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the sample data to construct a scatterplot. Use the first variable for the x-axis. Based on the scatterplot, what do you conclude about a linear correlation? Weight (lb) Highway (mpg) 2860 34 3045 33 3375 29 4070 25 4155 24 2210 39 3320 30 Which scatterplot below shows the data? OA. OB. OC. OD 407 400 40- Highway (mpg) Highway (mpg) Highway (mpg) 2011 2000 Weight...
How does the fuel consumption of a car change as its speed increases? The table contains...
How does the fuel consumption of a car change as its speed increases? The table contains data for a 2014 Chevrolet Cruze Turbo Diesel. Speed is measured in miles per hour, and fuel consumption is measured in miles per gallon. Speed 10 20 30 40 50 60 70 80 Fuel 38.1 54.0 68.4 63.6 60.5 55.4 50.6 43.8 To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT...
How does the fuel consumption of a car change as its speed increases? The table contains...
How does the fuel consumption of a car change as its speed increases? The table contains data for a 2014 Chevrolet Cruze Turbo Diesel. Speed is measured in miles per hour, and fuel consumption is measured in miles per gallon. Speed 10 20 30 40 50 60 70 80 Fuel 38.1 54.0 68.4 63.6 60.5 55.4 50.6 43.8 To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT...
A department of transportation's study on driving speed and miles per gallon for midsize automobiles resulted...
A department of transportation's study on driving speed and miles per gallon for midsize automobiles resulted in the following data: Speed (Miles per Hour) 30 50 40 55 30 24 60 24 51 56 Miles per Gallon 28 24 24 22 30 33 21 Compute the sample correlation coefficient (to 2 decimals and enter negative value as negative number). 35 26 24 What can you conclude, based on your computation of the sample correlation coefficient? - Select your answer -...
An individual wanted to determine the relation that might exist between speed and miles per gallon...
An individual wanted to determine the relation that might exist between speed and miles per gallon of an automobile. Let X be the average speed of a car on the highway measured in miles per hour and let Y represent the miles per gallon of the automobile. The following data is collected: X 50 55 55 60 60 62 65 65 Y 28 26 25 22 20 20 17 15 a. In the space below, draw a scatterplot of the...
please provide the correct answer
1. As the speed (in miles per hour) of an automobile increases, the gas mileage (in miles per gallon) first increases and then decreases. Suppose that this relationship is very regular, shown by the following data table and scatterplot. as Speed 30 40 50 60 70 Mileage 20 24 26 24 20 mileage 26 25 24 23 22 21 201 30 40 50 60 70 speed Why would we not want to compute a correlation...
The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the sample data to construct a scatterplot. Use the first variable for the x-axis. Based on the scatterplot, what do you conclude about a linear correlation? Weight (lb) Highway (mpg) 2880 33 3180 31 3375 29 3775 26 4265 24 2510 37 3265 30 Which scatterplot below shows the data? ОА. OB OC OD 40 40 d) 40 கு) Ap 20 2500 4500 WMO 2500 Weight...
A department of transportation's study on driving speed and miles per gallon for midsize automobiles resulted in the following data Speed (Miles per our30 50 40 55 30 24 60 25 51 55 Miles per Gallon 28 24 24 23 30 32 21 35 26 25 Compute the sample correlation coefficient (to 2 decimals and enter negative value as negative number) What can you conclude, based on your computation of the sample correlation coefficient? - Select your answer- Select the...
The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the sample data to construct a scatterplot. Use the first variable for the x-axis. Based on the scatterplot, what do you conclude about a linear correlation? Weight (lb) Highway (mpg) 2860 34 3045 33 3375 29 4070 25 4155 24 2210 39 3320 30 Which scatterplot below shows the data? OA. OB. OC. OD 407 400 40- Highway (mpg) Highway (mpg) Highway (mpg) 2011 2000 Weight...
A department of transportation's study on driving speed and miles per gallon for midsize automobiles resulted in the following data: Speed (Miles per Hour) 30 50 40 55 30 24 60 24 51 56 Miles per Gallon 28 24 24 22 30 33 21 Compute the sample correlation coefficient (to 2 decimals and enter negative value as negative number). 35 26 24 What can you conclude, based on your computation of the sample correlation coefficient? - Select your answer -...
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