Below are the average heights for American boys in 1990. 157.5 Find the estimate

Question

Below are the average heights for American boys in 1990.

157.5

Find the estimated average height for a one-year-old. (Use your equation from part (d). Round your answer to one decimal place.)

Use the least squares line to estimate the average height for a fifty-two-year-old man. (Use your equation from part (d). Round your answer to one decimal place.)

What is the slope of the least squares (best-fit) line? (Round your answer to three decimal places.)

Interpret the slope. (Round your answer to three decimal places.)

As age increases by one year, the average height increases  by ???? centimeters.

Age (years) Height (cm) birth 50.8 2 83.8 3 91.4 5 106.6 7 119.3 10 137.1 14

157.5

Explanation / Answer

Below are the average heights for American boys in 1990.

157.5

Find the estimated average height for a one-year-old. (Use your equation from part (d). Round your answer to one decimal place.)

Use the least squares line to estimate the average height for a fifty-two-year-old man. (Use your equation from part (d). Round your answer to one decimal place.)

What is the slope of the least squares (best-fit) line? (Round your answer to three decimal places.)

Interpret the slope. (Round your answer to three decimal places.)

As age increases by one year, the average height increases  by ???? centimeters.

Age (years) Height (cm) birth 50.8 2 83.8 3 91.4 5 106.6 7 119.3 10 137.1 14

157.5

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