### 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) Homework Help ✎

 Experience (years) 1 2 3 4 5 6 7 8 9 10 Hourly Wage ($) 12 13.25 14 16 17 18 19.5 21 22 23.25 1. Sketch a scatterplot showing the association between the wage and the years of experience. Describe the association. • Create a scatterplot with the x-axis labeled "Experience (years)" and the y-axis labeled "Hourly Wage ($)."

• See CCA 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.

• Label the x-axis “Experience (years)” and the y-axis “Hourly Wage (\$)” as you did with the scatterplot.

• See CCA 6-85(b) Residual Answer eTool (Desmos). Is the linear model appropriate?
Why or why not?

1. 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.