### Home > CCA > Chapter 6 > Lesson 6.2.3 > Problem6-85

6-85.

A human resources manager recorded the experience and hourly wage for a sample of 10 technology workers. 6-85 HW eTool (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 6-85(a) Answer eTool (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 6-85(b) Residual Answer eTool (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.