Lesson 2 Homework Practice Lines Of Best Fit [ Extended ]

| Age (years) | 1 | 2 | 3 | 4 | 5 | 6 | 8 | |-------------|---|---|---|---|---|---|---| | Price ($1000)| 20| 18| 15| 13| 10| 8 | 4 |

(2, 4), (3, 5), (4, 7), (5, 8), (6, 9), (7, 12), (8, 14) lesson 2 homework practice lines of best fit

c) Predict the value of a car: $_______________ 3. Draw Your Own Line of Best Fit Plot the following points on the grid below (or sketch on your own paper): | Age (years) | 1 | 2 |

c) Predict the test score for a student who studies : ________ 2. Age of Car vs. Value A used car dealer records the age of cars (in years) and their selling price (in $1000s). Value A used car dealer records the age

b) Equation of line of best fit: ___________________

a) Is the correlation positive or negative? ___________________

e) Is it reasonable to use this line to predict sales at ? Why or why not? 5. Challenge – Interpret the Line A student drew a line of best fit for a scatter plot with the equation: [ y = -2.5x + 45 ]