4. The tips earned during a typical workweek by a staff of full-time hairdressers are compared to its years of work experience. The results are given in the table.

Tips ($) 145 82 112 163 139

Experience 5 1 0.5 7 4

(years)

a) Create a scatter Plot for Tips vs. Experience by using Google Sheets, attach your file to your submission.

Use your chart to answer the following questions

b) Determine the correlation coefficient and the equation of the line of best fit.

c) Identify the outlier. Suggest possible reasons for the outlier.

d) Use the linear model to predict the weekly tips a hairdresser with 3 years experience might expect.

e) Use the linear model to predict the weekly tips a hairdresser with 32 years experience might expect. Explain why this model is not satisfactory in this case.