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4-86.

A human resources manager recorded the experience and hourly wage for a sample of 10 technology workers.  (Desmos).

  Experience (years)  Hourly Wage ($) $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$ $12.00$ $13.25$ $14.00$ $16.00$ $17.00$ $18.00$ $19.50$ $21.00$ $22.00$ $23.25$ 1. Sketch a scatterplot showing the association between the wage and the years of experience. Describe the association. • Create a scatterplot with the $x$-axis labeled "Experience (years)" and the y-axis labeled "Hourly Wage ($)."

• See  (Desmos). Remember to describe the association.

1. Sketch the residual plot. Is a linear model appropriate?

Refer to the Math Notes box in this lesson to review residual plots.

See (Desmos). Is the linear model appropriate?
Why or why not?

2. What is the correlation coefficient? What does it tell you?

• Remember that the correlation coefficient, $r$, is a measure of how much or how little the data is scattered around the LSRL.