3.13 The value of a quantitative variable is measured once a year for a 10-year period:

a. Draw a scatterplot to describe the variable as it changes over time.

b. Describe the measurements using the graph constructed in part

a. c. Use this MINITAB output to calculate the correla- tion coefficient, r:

d. Find the best-fitting line using the results of part

c. Verify your answer using the data entry method in your calculator.

e. Plot the best-fitting line on your scatterplot from part

a. Describe the fit of the line.

Transcribed Image Text:

Year Measurement Year Measurement 12345 61.5 6 58.2 62.3 7 57.5 60.7 8 57.5 59.8 9 56.1 58.0 10 56.0