Determining the age of an animal can sometimes be a dif fi cult task. One method of estimating the age of harp seals is based on the width of the pulp canal in the seal€™s canine teeth. To investigate the relationship between age and the width of the pulp canal, researchers measured age and canal width in seals of known age. The following data on x = age (in years) and y = canal length (in millimeters) are a portion of a larger data set that appeared in the paper €œValidation of Age Estimation in the Harp Seal Using Dentinal Annuli€ (Canadian Journal of Fisheries and Aquatic Science [1983]: 1430€“1441):

Construct a scatterplot for this data set. Would you describe the relationship between age and canal length as linear? If not, suggest a transformation that might straighten the plot.

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x 0.25 0.25 0.50 0.50 0.50 0.75 0.75 1.00 y 700 675 525 500 400 350300 300 x1.00 .00 1.00 1.00 1.25 1.25 01.50 y 250 230 150 100 200 100 100 125 x 2.00 2.00 2.50 2.75 3.00 4.00 4.00 5.00 y 60 140 60 50 10 10 10 10 x 5.00 5.00 5.00 6.00 6.00 y 15 0 10 15 10