Question: The equation y = 6.3x + 67.4 is a linear model for data comparing the ages of boys between 2 and 10 years old (x)

The equation y = 6.3x + 67.4 is a linear model for data comparingthe ages of boys between 2 and 10 years old (x) and their average

heights in centimeters (y).

What is the average height of a 8-year-old boy?

Rob found that the coefficient of determination between thelength of essays submitted to a teacher x and the score theteacher gave the essay y was about 0.661. What can we conclude?

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