# Statistics

Using advertised prices for used Ford Escorts a linear model for the relationship between a car's age and its price is found. The correlation coefficient is - 0.933

Determine R2 and interpret this statistic.
A) R2 = 93.3% which means that 93.3% of the variation in car price is explained by the age of the car.
B) R2 = 87.1% which means that 87.1% of the variation in car price is explained by the age of the car.
C) R2 = 93.3% which means that 93.3% of the variation in the age of the car is explained by the price of the car.
D) R2 = 87.1% which means that 87.1% of the variation in the age of the car is explained by the price of the car.
E) None of these are correct.

AND

The relationship between the number of games won during one season by a minor league baseball team and the average attendance at their home games is analyzed. A regression analysis to predict the average attendance from the number of games won gives the model

y-hat = -2600 + 222 wins

where y-hat is the predicted average attendance.

A team with 79 wins had a residual of 1562. What was the actual average attendance for this team?

1. 👍
2. 👎
3. 👁
4. ℹ️
5. 🚩
1. I don't know about the second question, but the variation accounted for by a correlation coefficient is found by squaring the correlation coefficient.

1. 👍
2. 👎
3. ℹ️
4. 🚩

## Similar Questions

1. ### Math (difficult)

The value of a new car purchased for \$28,000 decreases 8% per year. Write an exponential decay model for the value of the car. Use the model to estimate the value after 5 years.

2. ### Algebra

The table shows the relationship between the number of players on a team and the minutes each player gets to play Players Minutes 7 35 8 30 9 25 10 20 Is the relationship a function that is decreasing or increasing; is the

3. ### algebra 2

Car depreciation- The value of a new car purchased for \$20,000 decreases by 10% per year. Write an exponential decay model for the value of the car. Use the model to estimate the value after one year.

4. ### English

Which of the following is a simple sentence? A. The store opened early and closed late to celebrate its annual sale. B. She left home on time, but she still arrived late due to traffic. C. After he compared the prices and

1. ### maths

A model of a car has a scale of 1:25,a model is 18cm long,calculate the metres and actual length of the car

2. ### mathematics

Mark is building a scale model of his car as shown in the diagram. The actual car has a height of 10 feet and the model has a height of 1 foot at the same place. A. What is the actual length of the car? Show your work. B. Mark has

3. ### math

use a scatter plot to determine the relationship between the x values and the y values. x 7 2 4 5 1 6 3 7 5 26 20 15 30 12 25 possible answers: negative linear relationship nonlinear relationship no relationship positive linear

4. ### Finance

You are interested in a new Ford Taurus. After visiting your Ford dealer, doing your research on the best leases available, you have three options. (i) Purchase the car for cash and receive a \$1,900 cash rebate from Dealer A. The

1. ### Calc

The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her \$380 to drive 480 mi. and in June it cost her \$460 to drive 800 mi. a) Express the montly cost C as a function of the

2. ### pls help soon!!!

7. Is the relationship shown by the data linear? If it is, model the data with an equation. * x | -10 | -4 |-1 | 3 y | -3 | 0 | 2 | 4 The relationship is linear. y – 4 = 1 over 2(x – 3) The relationship is linear. y = 2 over

3. ### Mathematics

Which statement is always true? A. A linear relationship is proportional.]]]]]]]]]]]]]]]]]]] B. A linear relationship is non-proportional. C. A proportional relationship contains the point D. A non-proportional relationship has a

4. ### math

The value of Sara's new car decreases at a rate of 8% each year. 1.Write an exponential function to model the decrease in the car's value each month. 2.Write an exponential function to model the decrease in the car's value each