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Unit 3 Describing Relationships Review Practice.notebook
1
February 01, 2018
Unit 3 Describing Relationships Review Practice
(3.2C)
(c) This manufacturer also produces a television with a screen size of 943 square inches. Would it be reasonable to use this equation to predict the price of that television? Explain.
(d) Calculate the residual for the television that has a screen area of 437 square inches. What does this number suggest about the cost of this television, relative to the others?
Unit 3 Describing Relationships Review Practice.notebook
2
February 01, 2018
(a) What is the equation of the leastsquares line? Be sure to define any variables you use.
(b) Is a line an appropriate model for these data? Justify your answer
(c) Interpret the value of s (S = 2.3472) in the context of this problem.
Unit 3 Describing Relationships Review Practice.notebook
3
February 01, 2018
1. Interpret the slope of the leastsquares line in the context of the problem.
2. Predict the average July temperature for a city at a latitude of 42 degrees. Show your work.
3. Find the value of the residual for Detroit. Show your work. Interpret the value of the residual in the context of the problem.
6. The value of 2 r for these data is 0.277. Interpret this value in the context of the problem.
7. Is the given leastsquares regression line a good model for using latitude to predict average July temperature of U.S. cities? Support your answer with appropriate evidence from your answers above.
Unit 3 Describing Relationships Review Practice.notebook
4
February 01, 2018