Question: The scatterplot shows the relationship between x = height of a student (in inches) and y = number of steps required to walk the length

The scatterplot shows the relationship between x = height of a student (in inches) and y = number of steps required to walk the length of a school hallway, along with the regression line ŷ =113.6−0.921x.

65 60 55 50 45 40 60 62 64 66 68 70 72 74 Height (in.) Number of steps

a. Calculate and interpret the residual for Kiana, who is 67 inches tall and took 49 steps to walk the hallway.

b. Matthew is 10 inches taller than Samantha. About how many fewer steps do you expect Matthew to take compared to Samantha?

65 60 55 50 45 40 60 62 64 66 68 70 72 74 Height (in.) Number of steps

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